Use global Window object.

This makes it easier to control initialization and maintain RAII.

14 files changed, 224 insertions, 246 deletions

diff --git a/c/CMakeLists.txt b/c/CMakeLists.txt
index d8c3ce5..35af6ec 100644
--- a/c/CMakeLists.txt
+++ b/c/CMakeLists.txt
@@ -29,6 +29,7 @@ target_sources(EpisodeBrowser PRIVATE
   listview.cpp
   listview.h
   main.cpp
+  main.h
   resource.h
   resource.rc
   test.cpp
diff --git a/c/data.cpp b/c/data.cpp
index d9df68c..1274321 100644
--- a/c/data.cpp
+++ b/c/data.cpp
@@ -8,6 +8,7 @@
 #include "resource.h"
 #include "data.h"
 #include "episodelistview.h"
+#include "main.h"
 #include "util.h"
 #include "win.h"
 
@@ -89,7 +90,7 @@ enum Signal : unsigned char
 
 void WaitFor(void (*f)(unsigned char*))
 {
-	extern HWND g_hWnd;
+	extern Window* g_window;
 	static unsigned char sig = READY;
 	static UINT_PTR iTimer = 0;
 
@@ -98,12 +99,11 @@ void WaitFor(void (*f)(unsigned char*))
 		static int i = 0;
 
 		if (sig & DONE) {
-			extern EpisodeListView* g_elv;
 			KillTimer(nullptr, iTimer);
 			i = 0;
 			sig = READY; /* Reset signals. */
-			g_elv->Update(); /* Reset status bar. */
-			EnableMenuItem(GetMenu(g_hWnd), IDM_FILE_FETCH_CANCEL, MF_GRAYED);
+			g_window->elv.Update(); /* Reset status bar. */
+			EnableMenuItem(GetMenu(g_window->hWnd), IDM_FILE_FETCH_CANCEL, MF_GRAYED);
 		} else {
 			/* Animate ellipsis in status bar. */
 			static const wchar_t* text[] = {L".", L"..", L"...", L""};
@@ -118,7 +118,7 @@ void WaitFor(void (*f)(unsigned char*))
 		while (!(sig & READY))
 			Sleep(100);
 		sig = 0;
-		EnableMenuItem(GetMenu(g_hWnd), IDM_FILE_FETCH_CANCEL, MF_ENABLED);
+		EnableMenuItem(GetMenu(g_window->hWnd), IDM_FILE_FETCH_CANCEL, MF_ENABLED);
 		try {
 			f(&sig);
 			sig |= DONE;
@@ -132,7 +132,7 @@ void WaitFor(void (*f)(unsigned char*))
 	/* Null indicates that any active task should be cancelled. */
 	if (!f) {
 		sig |= ABORT;
-		EnableMenuItem(GetMenu(g_hWnd), IDM_FILE_FETCH_CANCEL, MF_GRAYED);
+		EnableMenuItem(GetMenu(g_window->hWnd), IDM_FILE_FETCH_CANCEL, MF_GRAYED);
 		return;
 	}
 
@@ -180,8 +180,7 @@ void FetchData(unsigned char* sig)
 		throw std::runtime_error("could not find remote episode information");
 
 	for (int i = 0; i < nodes->nodeNr; i++) {
-		extern FileView<ElvDataA> g_fvElv;
-		extern FileView<DlvDataA> g_fvDlv;
+		extern Window* g_window;
 
 		if (*sig & ABORT)
 			return;
@@ -190,8 +189,8 @@ void FetchData(unsigned char* sig)
 		if (xmlChildElementCount(node) != 8)
 			throw std::runtime_error("unexpected remote data format");
 
-		ElvDataA& e = g_fvElv.At(i);
-		DlvDataA& d = g_fvDlv.At(i);
+		ElvDataA& e = g_window->fvElv.At(i);
+		DlvDataA& d = g_window->fvDlv.At(i);
 
 		/* Each datum is contained within a specific cell in
 		 * the row. The child element count above ensures that
@@ -223,8 +222,7 @@ void FetchData(unsigned char* sig)
 
 void FetchScreenwriters(unsigned char* sig)
 {
-	extern FileView<DlvDataA> g_fvDlv;
-	extern CfgA& g_cfg;
+	extern Window* g_window;
 
 	/* Screenwriters are expensive to fetch, so we try to avoid
 	 * fetching screenwriters for episodes that already have a
@@ -233,12 +231,12 @@ void FetchScreenwriters(unsigned char* sig)
 	 * already tried to fetch screenwriters. We keep track of
 	 * these states using the iLast variable. */
 	static int iLast = -1;
-	int iMax = g_cfg.cEp-1;
+	int iMax = g_window->cfg.cEp-1;
 
 	/* Find the last episode that has a screenwriter. */
 	if (iLast == -1)
-		for (size_t i = 0; i < g_fvDlv.c; i++)
-			if (const DlvDataA& d = g_fvDlv[i]; !d.date[0]) {
+		for (size_t i = 0; i < g_window->fvDlv.c; i++)
+			if (const DlvDataA& d = g_window->fvDlv[i]; !d.date[0]) {
 				iMax = i-1;
 				break;
 			} else if (d.screenwriter[0])
@@ -262,7 +260,7 @@ void FetchScreenwriters(unsigned char* sig)
 		Status(msg);
 
 		/* Retrieve URL for episode's wiki page. */
-		DlvDataA& d = g_fvDlv[iLast];
+		DlvDataA& d = g_window->fvDlv[iLast];
 		Wcscpy(Buf(url)+Len(prefix), d.wiki);
 
 		/* Retrieve screenwriter from HTML. */
diff --git a/c/datalistview.cpp b/c/datalistview.cpp
index b63a342..cdd8189 100644
--- a/c/datalistview.cpp
+++ b/c/datalistview.cpp
@@ -9,12 +9,10 @@
 #include "episodelistview.h"
 #include "listview.h"
 #include "layout.h"
+#include "main.h"
 
-extern CfgA& g_cfg;
-extern FileView<DlvDataA> g_fvDlv;
-
-DataListView::DataListView(const HWND hWndParent)
-	: ListView(hWndParent, reinterpret_cast<HMENU>(IDC_DATALISTVIEW), LVS_NOCOLUMNHEADER)
+DataListView::DataListView(Window& parent)
+	: ListView(parent, reinterpret_cast<HMENU>(IDC_DATALISTVIEW), LVS_NOCOLUMNHEADER)
 {
 	LVCOLUMN lvc;
 
@@ -30,7 +28,7 @@ DataListView::DataListView(const HWND hWndParent)
 	lvc.cx = 500;
 	ListView_InsertColumn(hWnd, DLVSIVALUE, &lvc);
 
-	m_height = g_cfg.heightDlv;
+	m_height = parent.cfg.heightDlv;
 }
 
 int DataListView::Height()
@@ -53,7 +51,7 @@ void DataListView::SetHeight(int h)
 
 void DataListView::ShowEpisode(const int iEpisode)
 {
-	const DlvDataA& d = g_fvDlv[iEpisode-1];
+	const DlvDataA& d = parent.fvDlv[iEpisode-1];
 
 	ListView_DeleteAllItems(hWnd);
 	if (d.version == Version<DlvDataA>) {
@@ -88,8 +86,7 @@ void DataListView::ShowEpisode(const int iEpisode)
 	LVFINDINFO lvfi;
 	lvfi.flags = LVFI_PARAM;
 	lvfi.lParam = iEpisode;
-	extern EpisodeListView* g_elv;
-	int iItem = ListView_FindItem(g_elv->hWnd, -1, &lvfi);
+	int iItem = ListView_FindItem(parent.elv.hWnd, -1, &lvfi);
 	if (iItem != -1)
-		ListView_EnsureVisible(g_elv->hWnd, iItem, TRUE);
+		ListView_EnsureVisible(parent.elv.hWnd, iItem, TRUE);
 }
diff --git a/c/datalistview.h b/c/datalistview.h
index 57cb565..21d6f05 100644
--- a/c/datalistview.h
+++ b/c/datalistview.h
@@ -9,7 +9,7 @@
 
 struct DataListView : public ListView
 {
-	DataListView(HWND hWndParent);
+	DataListView(Window& parent);
 	/* Return manual height, if set, or calculate height
 	 * appropriate for number of items. */
 	int Height() override;
diff --git a/c/episodelistview.cpp b/c/episodelistview.cpp
index 8581890..ea4849f 100644
--- a/c/episodelistview.cpp
+++ b/c/episodelistview.cpp
@@ -9,14 +9,12 @@
 #include "episodelistview.h"
 #include "ext.h"
 #include "listview.h"
+#include "main.h"
 #include "util.h"
 #include "win.h"
 
-extern CfgA& g_cfg;
-extern FileView<ElvDataA> g_fvElv;
-
-EpisodeListView::EpisodeListView(const HWND hWndParent)
-	: ListView(hWndParent, reinterpret_cast<HMENU>(IDC_EPISODELISTVIEW), 0)
+EpisodeListView::EpisodeListView(Window& parent)
+	: ListView(parent, reinterpret_cast<HMENU>(IDC_EPISODELISTVIEW), 0)
 {
 	LVCOLUMN lvc;
 
@@ -37,7 +35,7 @@ EpisodeListView::EpisodeListView(const HWND hWndParent)
 	ListView_InsertColumn(hWnd, ELVSIRATING, &lvc);
 
 	/* Get saved sort-by-column setting. */
-	m_iSortCol = g_cfg.iSortCol;
+	m_iSortCol = parent.cfg.iSortCol;
 }
 
 void EpisodeListView::EnsureFocusVisible()
@@ -56,7 +54,7 @@ void EpisodeListView::HandleContextMenu(const WORD command)
 
 	LVITEM lvi = {LVIF_PARAM, -1};
 	while (FindNextItem(&lvi, LVNI_SELECTED)) {
-		ElvDataA& e = g_fvElv.At(lvi.lParam-1);
+		ElvDataA& e = parent.fvElv.At(lvi.lParam-1);
 
 		if (ID_SUBGROUP(command) == IDG_CTX_RATE) {
 			/* Process rate commands. */
@@ -113,7 +111,7 @@ LRESULT EpisodeListView::HandleNotify(const LPARAM lParam)
 	case LVN_GETDISPINFO:	/* Display item. */
 	    {
 		NMLVDISPINFO* const nm = reinterpret_cast<NMLVDISPINFO*>(lParam);
-		ElvDataA& e = g_fvElv.At(nm->item.lParam-1);
+		ElvDataA& e = parent.fvElv.At(nm->item.lParam-1);
 		wchar_t* vs[] = {e.siEp, e.title, e.sRating}; /* ELVSIEPISODE, ELVSITITLE, ELVSIRATING */
 		nm->item.pszText = vs[nm->item.iSubItem];
 		return 0;
@@ -121,8 +119,7 @@ LRESULT EpisodeListView::HandleNotify(const LPARAM lParam)
 
 	case LVN_ITEMCHANGED:	/* Select/focus episode. */
 		if ((nm->uChanged & LVIF_STATE) && (nm->uNewState & LVIS_FOCUSED)) {
-			extern DataListView* g_dlv;
-			g_dlv->ShowEpisode(nm->lParam);
+			parent.dlv.ShowEpisode(nm->lParam);
 		}
 		return 0;
 
@@ -133,7 +130,7 @@ LRESULT EpisodeListView::HandleNotify(const LPARAM lParam)
 		/* The sign of m_iSortCol decides the sort order. */
 		m_iSortCol = abs(m_iSortCol) == iCol? -m_iSortCol: iCol;
 
-		g_cfg.iSortCol = m_iSortCol;
+		parent.cfg.iSortCol = m_iSortCol;
 		Sort();
 		ShowFocus();
 		return 0;
@@ -162,7 +159,7 @@ LRESULT EpisodeListView::HandleNotify(const LPARAM lParam)
 			break;
 		case CDDS_ITEMPREPAINT:
 		    {
-			const ElvDataA& e = g_fvElv.At(nm->nmcd.lItemlParam-1);
+			const ElvDataA& e = parent.fvElv.At(nm->nmcd.lItemlParam-1);
 			if (!e.bWatched) {
 				extern HFONT g_hfBold;
 				Require(SelectObject(nm->nmcd.hdc, g_hfBold));
@@ -188,7 +185,7 @@ LRESULT EpisodeListView::HandleNotify(const LPARAM lParam)
 		extern HMENU g_hMenuPopup;
 		const DWORD pos = GetMessagePos();
 		Require(TrackPopupMenu(g_hMenuPopup, TPM_RIGHTBUTTON,
-		    LOWORD(pos), HIWORD(pos), 0, m_hWndParent, nullptr));
+		    LOWORD(pos), HIWORD(pos), 0, parent.hWnd, nullptr));
 		return 0;
 	    }
 
@@ -217,10 +214,9 @@ void EpisodeListView::RestoreFocus()
 {
 	int i, iEpisode, iItem;
 	LVFINDINFO lvfi;
-	extern DataListView* g_dlv;
 
 	iItem = 0;
-	iEpisode = g_cfg.iFocus;
+	iEpisode = parent.cfg.iFocus;
 
 	lvfi.flags = LVFI_PARAM;
 	lvfi.lParam = iEpisode;
@@ -237,7 +233,7 @@ void EpisodeListView::RestoreFocus()
 	if (iItem != -1) goto s;
 	return;
 
-s:	g_dlv->ShowEpisode(iEpisode);
+s:	parent.dlv.ShowEpisode(iEpisode);
 	ListView_SetItemState(hWnd, -1, LVIF_STATE, LVIS_SELECTED);
 	SetTop(iItem > 5? iItem-5: 0);
 	ListView_SetItemState(hWnd, iItem,
@@ -248,7 +244,7 @@ void EpisodeListView::SaveFocus()
 {
 	LVITEM lvi = {LVIF_PARAM, -1};
 	if (FindNextItem(&lvi, LVNI_FOCUSED))
-		g_cfg.iFocus = lvi.lParam;
+		parent.cfg.iFocus = lvi.lParam;
 }
 
 void EpisodeListView::SetTop(const int iItem)
@@ -280,10 +276,10 @@ void EpisodeListView::SelectUnwatched(int dir)
 		for (;;) {
 			iEpNew += dir;
 			if (iEpNew == 0
-			    || static_cast<size_t>(iEpNew) > g_fvElv.c
-			    || !g_fvElv[iEpNew-1].siEp[0])
+			    || static_cast<size_t>(iEpNew) > parent.fvElv.c
+			    || !parent.fvElv[iEpNew-1].siEp[0])
 				return;
-			if (!g_fvElv[iEpNew-1].bWatched)
+			if (!parent.fvElv[iEpNew-1].bWatched)
 				break;
 		}
 
@@ -329,8 +325,8 @@ int CALLBACK EpisodeListView::SortProc(const LPARAM iItem1, const LPARAM iItem2,
 	 * If m_iSortCol is negative, the order is descending. */
 	const int order = Cmp(elv->m_iSortCol, 0);
 
-	const ElvDataA& e1 = g_fvElv[lvi1.lParam-1];
-	const ElvDataA& e2 = g_fvElv.At(lvi2.lParam-1);
+	const ElvDataA& e1 = elv->parent.fvElv[lvi1.lParam-1];
+	const ElvDataA& e2 = elv->parent.fvElv.At(lvi2.lParam-1);
 
 	switch (abs(elv->m_iSortCol)-1) {
 	case ELVSIEPISODE:
@@ -389,21 +385,20 @@ void EpisodeListView::Update()
 		/* Retrieve episode data and add list view items. */
 		SendMessageW(hWnd, WM_SETREDRAW, FALSE, 0);
 		ListView_DeleteAllItems(hWnd);
-		for (int iEp = 1; iEp <= g_cfg.cEp; iEp++) {
-			ElvDataA& e = g_fvElv.At(iEp-1);
+		for (int iEp = 1; iEp <= parent.cfg.cEp; iEp++) {
+			ElvDataA& e = parent.fvElv.At(iEp-1);
 
 			if (!e.siEp[0])
 				continue;
 
-			if (extern FileView<DlvDataA> g_fvDlv;
-			    g_cfg.limitToScreenwriter[0]
-			    && wcscmp(g_fvDlv.At(iEp-1).screenwriter, g_cfg.limitToScreenwriter) != 0)
+			if (parent.cfg.limitToScreenwriter[0]
+			    && wcscmp(parent.fvDlv.At(iEp-1).screenwriter, parent.cfg.limitToScreenwriter) != 0)
 				continue;
 
-			if (!g_cfg.bViewWatched && e.bWatched)
+			if (!parent.cfg.bViewWatched && e.bWatched)
 				continue;
 
-			if (!g_cfg.bViewTVOriginal && e.bTVOriginal)
+			if (!parent.cfg.bViewTVOriginal && e.bTVOriginal)
 				continue;
 
 			/* Insert item. */
diff --git a/c/episodelistview.h b/c/episodelistview.h
index e6f2858..52175a0 100644
--- a/c/episodelistview.h
+++ b/c/episodelistview.h
@@ -14,7 +14,7 @@
 
 struct EpisodeListView : public ListView
 {
-	EpisodeListView(HWND hWndParent);
+	EpisodeListView(Window& parent);
 	void EnsureFocusVisible();
 	void HandleContextMenu(WORD);
 	LRESULT HandleNotify(LPARAM lParam);
diff --git a/c/ext.cpp b/c/ext.cpp
index 694581d..77028d1 100644
--- a/c/ext.cpp
+++ b/c/ext.cpp
@@ -3,15 +3,14 @@
 #include <string_view>
 
 #include "data.h"
+#include "main.h"
 
-extern CfgA& g_cfg;
-extern FileView<ElvDataA> g_fvElv;
-extern FileView<DlvDataA> g_fvDlv;
+extern Window* g_window;
 
 bool OpenOnline(int iEp)
 {
-	wchar_t url[sizeof(g_cfg.url)+4];
-	Swprintf(url, L"%s%d", g_cfg.url, iEp);
+	wchar_t url[sizeof(g_window->cfg.url)+4];
+	Swprintf(url, L"%s%d", g_window->cfg.url, iEp);
 	INT_PTR r = reinterpret_cast<INT_PTR>(
 	    ShellExecuteW(nullptr, L"open", url, nullptr, nullptr, SW_SHOWNORMAL));
 	if (r <= 32)
@@ -21,7 +20,7 @@ bool OpenOnline(int iEp)
 
 bool OpenWiki(int iEp)
 {
-	const DlvDataA& d = g_fvDlv.At(iEp-1);
+	const DlvDataA& d = g_window->fvDlv.At(iEp-1);
 	wchar_t url[sizeof(d.wiki)+35];
 	Swprintf(url, L"https://www.detectiveconanworld.com%s", d.wiki);
 	INT_PTR r = reinterpret_cast<INT_PTR>(
@@ -114,7 +113,7 @@ static bool FindMatchingFile(wchar_t (&file)[MAX_PATH], const wchar_t* const roo
 bool OpenLocally(int iEp)
 {
 	wchar_t file[MAX_PATH];
-	if (FindMatchingFile(file, g_cfg.root, g_fvElv.At(iEp-1).siEp)) {
+	if (FindMatchingFile(file, g_window->cfg.root, g_window->fvElv.At(iEp-1).siEp)) {
 		INT_PTR r = reinterpret_cast<INT_PTR>(
 		    ShellExecuteW(nullptr, L"open", file, nullptr, nullptr, SW_SHOWNORMAL));
 		if (r <= 32)
diff --git a/c/layout.cpp b/c/layout.cpp
index 23ee490..e817b23 100644
--- a/c/layout.cpp
+++ b/c/layout.cpp
@@ -3,12 +3,11 @@
 #include "episodelistview.h"
 #include "datalistview.h"
 #include "layout.h"
+#include "main.h"
 #include "win.h"
 
-extern HWND g_hWnd;
+extern Window* g_window;
 extern HWND g_hWndStatus;
-extern EpisodeListView* g_elv;
-extern DataListView* g_dlv;
 
 void UpdateLayout(int w, int h)
 {
@@ -16,33 +15,84 @@ void UpdateLayout(int w, int h)
 
 	RECT rc, rrStatus;
 	if (w && h) rc = {0, 0, w, h};
-	else Require(GetClientRect(g_hWnd, &rc));
+	else Require(GetClientRect(g_window->hWnd, &rc));
 	Require(GetRelativeRect(g_hWndStatus, &rrStatus));
 
-	SendMessageW(g_hWnd, WM_SETREDRAW, FALSE, 0);
+	SendMessageW(g_window->hWnd, WM_SETREDRAW, FALSE, 0);
 
 	/* Resize list views. */
 	const long pad = EBIsThemeActive()? Dpi(6): 0; /* Add padding in modern themes. */
-	const long cyDlv = rrStatus.top-g_dlv->Height()-pad;
-	Require(SetWindowRect(g_dlv->hWnd, pad, cyDlv, rc.right-pad, rrStatus.top-pad));
-	Require(SetWindowRect(g_elv->hWnd, pad, pad, rc.right-pad, cyDlv-pad));
-	g_dlv->ResizeColumns(rc.right-pad-pad);
-	g_elv->ResizeColumns(rc.right-pad-pad);
+	const long cyDlv = rrStatus.top-g_window->dlv.Height()-pad;
+	Require(SetWindowRect(g_window->dlv.hWnd, pad, cyDlv, rc.right-pad, rrStatus.top-pad));
+	Require(SetWindowRect(g_window->elv.hWnd, pad, pad, rc.right-pad, cyDlv-pad));
+	g_window->dlv.ResizeColumns(rc.right-pad-pad);
+	g_window->elv.ResizeColumns(rc.right-pad-pad);
 
 	/* Resize status bar parts. */
 	const int aParts[] = {rc.right-Dpi(55), rc.right};
 	SendMessageW(g_hWndStatus, SB_SETPARTS,
 	    sizeof(aParts), reinterpret_cast<LPARAM>(aParts));
 
-	SendMessageW(g_hWnd, WM_SETREDRAW, TRUE, 0);
-	RedrawWindow(g_hWnd, nullptr, nullptr,
+	SendMessageW(g_window->hWnd, WM_SETREDRAW, TRUE, 0);
+	RedrawWindow(g_window->hWnd, nullptr, nullptr,
 	    RDW_ERASE|RDW_FRAME|RDW_INVALIDATE|RDW_ALLCHILDREN);
 }
 
+bool Dragger::IsDouble(const long time, const POINT& pt)
+{
+	const bool dbl = time-m_time0 <= static_cast<long>(GetDoubleClickTime())
+	&& abs(pt.x-m_pt0.x) <= Metric<SM_CXDOUBLECLK>
+	&& abs(pt.y-m_pt0.y) <= Metric<SM_CYDOUBLECLK>;
+	m_time0 = time;
+	m_pt0 = std::move(pt);
+	return dbl;
+}
+
+bool Dragger::IsDown() const
+{
+	return GetKeyState(VK_LBUTTON) & 0x8000;
+}
+
+bool Dragger::HandleLButtonDown()
+{
+	POINT pt;
+	Require(GetRelativeCursorPos(parent.hWnd, &pt));
+	if (!InDragArea(pt.x, pt.y)) return false;
+
+	if (IsDouble(GetMessageTime(), pt)) {
+		m_bActive = false;
+		Reset();
+	} else
+		m_bActive = true;
+
+	return m_bActive;
+}
+
+bool Dragger::HandleSetCursor()
+{
+	POINT pt;
+	Require(GetRelativeCursorPos(parent.hWnd, &pt));
+
+	extern HCURSOR g_hcSizeNs;
+	bool r = true;
+	if (InDragArea(pt.x, pt.y))
+		SetCursor(g_hcSizeNs);
+	else
+		r = false;
+	if (!m_bActive)
+		return r;
+	Drag(pt.x, pt.y);
+	if (!IsDown()) {
+		m_bActive = false;
+		Done();
+	}
+	return r;
+}
+
 bool DlvDragger::InDragArea(const int x, const int y) const
 {
 	RECT rrDlv;
-	Require(GetRelativeRect(g_dlv->hWnd, &rrDlv));
+	Require(GetRelativeRect(g_window->dlv.hWnd, &rrDlv));
 
 	const int pad = EBIsThemeActive()? Dpi(6): 0;
 	const int extra = EBIsThemeActive()? 0: Dpi(2);
@@ -54,28 +104,26 @@ bool DlvDragger::InDragArea(const int x, const int y) const
 void DlvDragger::Drag(const int, const int y) const
 {
 	RECT rrDlv;
-	Require(GetRelativeRect(g_dlv->hWnd, &rrDlv));
+	Require(GetRelativeRect(g_window->dlv.hWnd, &rrDlv));
 
 	if (y < Dpi(50) || y > rrDlv.bottom-Dpi(20)) return;
 
 	int h;
 	h = rrDlv.bottom-y;
-	g_dlv->SetHeight(h);
+	g_window->dlv.SetHeight(h);
 	UpdateLayout();
-	RedrawWindow(g_hWnd, nullptr, nullptr,
+	RedrawWindow(g_window->hWnd, nullptr, nullptr,
 	    RDW_ERASE|RDW_FRAME|RDW_INVALIDATE|RDW_ALLCHILDREN|RDW_UPDATENOW);
 }
 
 void DlvDragger::Reset() const
 {
-	extern CfgA& g_cfg;
-	g_dlv->SetHeight(0);
-	g_cfg.heightDlv = 0;
+	g_window->dlv.SetHeight(0);
+	g_window->cfg.heightDlv = 0;
 	UpdateLayout();
 }
 
 void DlvDragger::Done() const
 {
-	extern CfgA& g_cfg;
-	g_cfg.heightDlv = g_dlv->Height();
+	g_window->cfg.heightDlv = g_window->dlv.Height();
 }
diff --git a/c/layout.h b/c/layout.h
index 07eee56..4780821 100644
--- a/c/layout.h
+++ b/c/layout.h
@@ -14,10 +14,14 @@ void UpdateLayout(int w = 0, int h = 0);
  * HandleSetCursor are called by relevant window procedures upon
  * WM_(NC)LBUTTONDOWN and WM_SETCURSOR. */
 
+struct Window;
+
 struct Dragger
 {
+	Window& parent;
 	bool HandleLButtonDown();
 	bool HandleSetCursor();
+	inline Dragger(Window& parent) : parent(parent) {}
 protected:
 	bool IsDown() const;
 	bool IsDouble(const long time, const POINT& pt);
@@ -39,6 +43,7 @@ private:
 
 struct DlvDragger : public Dragger
 {
+	inline DlvDragger(Window& parent) : Dragger(parent) {}
 private:
 	bool InDragArea(int x, int y) const override;
 	void Drag(int x, int y) const override;
@@ -46,60 +51,4 @@ private:
 	void Done() const override;
 };
 
-/* Below follows the implementation of the non-virtual member
- * functions of Dragger, on which derived objects rely. */
-
-inline bool Dragger::IsDouble(const long time, const POINT& pt)
-{
-	const bool dbl = time-m_time0 <= static_cast<long>(GetDoubleClickTime())
-	&& abs(pt.x-m_pt0.x) <= Metric<SM_CXDOUBLECLK>
-	&& abs(pt.y-m_pt0.y) <= Metric<SM_CYDOUBLECLK>;
-	m_time0 = time;
-	m_pt0 = std::move(pt);
-	return dbl;
-}
-
-inline bool Dragger::IsDown() const
-{
-	return GetKeyState(VK_LBUTTON) & 0x8000;
-}
-
-inline bool Dragger::HandleLButtonDown()
-{
-	extern HWND g_hWnd;
-	POINT pt;
-	Require(GetRelativeCursorPos(g_hWnd, &pt));
-	if (!InDragArea(pt.x, pt.y)) return false;
-
-	if (IsDouble(GetMessageTime(), pt)) {
-		m_bActive = false;
-		Reset();
-	} else
-		m_bActive = true;
-
-	return m_bActive;
-}
-
-inline bool Dragger::HandleSetCursor()
-{
-	extern HWND g_hWnd;
-	POINT pt;
-	Require(GetRelativeCursorPos(g_hWnd, &pt));
-
-	extern HCURSOR g_hcSizeNs;
-	bool r = true;
-	if (InDragArea(pt.x, pt.y))
-		SetCursor(g_hcSizeNs);
-	else
-		r = false;
-	if (!m_bActive)
-		return r;
-	Drag(pt.x, pt.y);
-	if (!IsDown()) {
-		m_bActive = false;
-		Done();
-	}
-	return r;
-}
-
 #endif
diff --git a/c/listview.cpp b/c/listview.cpp
index 41f68a7..6074707 100644
--- a/c/listview.cpp
+++ b/c/listview.cpp
@@ -3,24 +3,24 @@
 
 #include "listview.h"
 #include "layout.h"
+#include "main.h"
 #include "win.h"
 
 /* Actual window procedure for all list views, which calls the
  * appropriate WndProc member function. */
 static LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);
 
-ListView::ListView(const HWND hWndParent, const HMENU hMenu, const DWORD dwStyle)
+ListView::ListView(Window& parent, const HMENU hMenu, const DWORD dwStyle) : parent(parent)
 {
 	extern HFONT g_hfNormal;
 
-	m_hWndParent = hWndParent;
 	hWnd = Require(CreateWindowExW(
 	    WS_EX_CLIENTEDGE,
 	    WC_LISTVIEW,
 	    L"",
 	    dwStyle|WS_CHILD|WS_VISIBLE|WS_VSCROLL|WS_TABSTOP|LVS_REPORT|LVS_SHOWSELALWAYS,
 	    0, 0, 0, 0,
-	    hWndParent, hMenu, GetModuleHandle(nullptr), this));
+	    parent.hWnd, hMenu, GetModuleHandle(nullptr), this));
 	m_proc0 = reinterpret_cast<WNDPROC>(SetWindowLongPtr(
 	    hWnd, GWLP_WNDPROC, reinterpret_cast<LONG_PTR>(::WndProc)));
 
@@ -41,7 +41,7 @@ void ListView::UpdateTheme(const bool bThemeActive)
 {
 	const wchar_t* theme;
 	WORD action;
-	extern BOOL (*SetWindowTheme)(HWND, const wchar_t*, const wchar_t*);
+	extern HRESULT (__stdcall *SetWindowTheme)(HWND, const wchar_t*, const wchar_t*);
 
 	if (!SetWindowTheme) return;
 	if (bThemeActive) {
@@ -62,7 +62,6 @@ void ListView::UpdateTheme(const bool bThemeActive)
 LRESULT CALLBACK ListView::WndProc(const HWND hWnd, const UINT uMsg,
     const WPARAM wParam, const LPARAM lParam)
 {
-	extern DlvDragger g_dragDlv;
 	switch (uMsg) {
 	case WM_NOTIFY:
 		switch (reinterpret_cast<NMHDR*>(lParam)->code) {
@@ -73,7 +72,7 @@ LRESULT CALLBACK ListView::WndProc(const HWND hWnd, const UINT uMsg,
 		break;
 	case WM_LBUTTONDOWN:
 	case WM_NCLBUTTONDOWN:
-		if (g_dragDlv.HandleLButtonDown())
+		if (parent.dragDlv.HandleLButtonDown())
 			return 0;
 		break;
 	}
diff --git a/c/listview.h b/c/listview.h
index b0e49ee..30164f7 100644
--- a/c/listview.h
+++ b/c/listview.h
@@ -4,11 +4,14 @@
 #include <windows.h>
 #include <commctrl.h>
 
+struct Window;
+
 struct ListView
 {
 	HWND hWnd;
+	Window& parent;
 
-	ListView(HWND hWndParent, HMENU hMenu, DWORD dwStyle);
+	ListView(Window& parent, HMENU hMenu, DWORD dwStyle);
 	/* Retrieve next matching list view item. */
 	bool FindNextItem(LVITEM* lvi, LPARAM lParam);
 	/* Naively calculate height appropriate for number of items. */
@@ -21,7 +24,6 @@ struct ListView
 	virtual LRESULT CALLBACK WndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam);
 protected:
 	WNDPROC m_proc0;
-	HWND m_hWndParent;
 };
 
 inline bool ListView::FindNextItem(LVITEM* const lvi, const LPARAM lParam)
diff --git a/c/main.cpp b/c/main.cpp
index 203a24d..58c0441 100644
--- a/c/main.cpp
+++ b/c/main.cpp
@@ -9,6 +9,7 @@
 #include "datalistview.h"
 #include "episodelistview.h"
 #include "layout.h"
+#include "main.h"
 #include "test.h"
 #include "util.h"
 
@@ -24,56 +25,37 @@
  * program. `extern' is used to access them from other files, when
  * need be. */
 
-/* Exit gracefully on uncaught exception. */
-static auto _ = SET_TERMINATE;
-
 /* Looked-up constants. */
 int g_dpi = 96;
 
-/* Cursors. */
-HCURSOR g_hcArrow = LoadCursorW(nullptr, IDC_ARROW);
-HCURSOR g_hcSizeNs = LoadCursorW(nullptr, IDC_SIZENS);
-
 /* Fonts. */
 HFONT g_hfNormal;
 HFONT g_hfBold;
 
+/* Cursors. */
+HCURSOR g_hcArrow = LoadCursorW(nullptr, IDC_ARROW);
+HCURSOR g_hcSizeNs = LoadCursorW(nullptr, IDC_SIZENS);
+
 /* Menus. */
 HMENU g_hMenuPopup;
 
 /* Windows. */
 HWND g_hWndFocus;
-HWND g_hWnd;
 HWND g_hWndStatus;
 
-/* Child window objects. */
-DataListView* g_dlv;
-EpisodeListView* g_elv;
-
-/* Layout handlers. */
-DlvDragger g_dragDlv;
-
-/* File views. */
-FileView<CfgA> g_fvCfg = FileView<CfgA>::Initialized(L"cfg.dat", 1);
-CfgA& g_cfg = g_fvCfg.At(0);
-FileView<ElvDataA> g_fvElv(L"elvdata.dat", g_cfg.cEp+128u);
-FileView<DlvDataA> g_fvDlv(L"dlvdata.dat", g_cfg.cEp+128u);
-
 /* Optional Windows functions. */
 BOOL (__stdcall *IsThemeActive)();
 HRESULT (__stdcall *SetWindowTheme)(HWND, const wchar_t*, const wchar_t*);
 
+/* Main window object. */
+Window* g_window;
+
 /* Initialize important global state on parent window creation. */
-static void InitializeMainWindow(HWND);
+static void InitializeMainWindow(HWND) noexcept;
 /* Process parent window commands. */
 static LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);
-static LRESULT CALLBACK HandleMsg(HWND, UINT, WPARAM, LPARAM);
-/* Process main menu commands. */
-static void HandleMainMenu(HWND, WORD);
 /* Handle messages to Help > About dialog. */
-static INT_PTR CALLBACK AboutDlgProc(HWND, UINT, WPARAM, LPARAM);
-/* Try to style application according to current Windows theme. */
-static void UpdateTheme();
+INT_PTR CALLBACK AboutDlgProc(HWND, UINT, WPARAM, LPARAM);
 
 int WINAPI WinMain(
 	_In_ const HINSTANCE hInstance,
@@ -81,6 +63,9 @@ int WINAPI WinMain(
 	_In_ char* const,
 	_In_ const int nCmdShow)
 {
+	/* Exit gracefully on uncaught exception. */
+	SET_TERMINATE;
+
 	setbuf(stdout, nullptr);
 	LIBXML_TEST_VERSION;
 
@@ -126,8 +111,8 @@ int WINAPI WinMain(
 
 	/* Populate episode list view. */
 	/* TODO: Update tracked episodes. */
-	g_elv->Update();
-	g_elv->RestoreFocus();
+	g_window->elv.Update();
+	g_window->elv.RestoreFocus();
 
 #ifdef _DEBUG
 	RunTests();
@@ -143,7 +128,7 @@ int WINAPI WinMain(
 	return 0;
 }
 
-void InitializeMainWindow(const HWND hWnd)
+static void InitializeMainWindow_(const HWND hWnd)
 {
 	/* This code is run ONCE, at the creation of the top-level
 	 * window -- before WndProc! This is important, as it
@@ -186,37 +171,58 @@ void InitializeMainWindow(const HWND hWnd)
 	g_hMenuPopup = Require(LoadMenuW(nullptr, MAKEINTRESOURCE(IDR_POPUPMENU)));
 	g_hMenuPopup = Require(GetSubMenu(g_hMenuPopup, 0));
 
-	/* Create child windows. */
-	g_dlv = new DataListView(hWnd);
-	g_elv = new EpisodeListView(hWnd);
+	g_window = new Window(hWnd);
+}
 
-	/* The global main window handle must only be set AFTER
-	 * successful initialization. */
-	g_hWnd = hWnd;
+void InitializeMainWindow(const HWND hWnd) noexcept
+{
+	try {
+		InitializeMainWindow_(hWnd);
+	} catch (...) {
+		ShowException(L"Initialization failed due to an error: %s");
+		exit(1);
+	}
 }
 
 LRESULT CALLBACK WndProc(const HWND hWnd, const UINT uMsg, const WPARAM wParam, const LPARAM lParam)
 {
 	try {
-		return HandleMsg(hWnd, uMsg, wParam, lParam);
+		return g_window->WndProc(hWnd, uMsg, wParam, lParam);
 	} catch (...) {
 		ShowException(L"The action was cancelled due to an error: %s");
 	}
 	return DefWindowProc(hWnd, uMsg, wParam, lParam);
 }
 
-LRESULT CALLBACK HandleMsg(const HWND hWnd, const UINT uMsg, const WPARAM wParam, const LPARAM lParam)
+INT_PTR CALLBACK AboutDlgProc(const HWND hWnd, const UINT uMsg, const WPARAM wParam, const LPARAM)
+{
+	switch (uMsg) {
+	case WM_CLOSE:
+		EndDialog(hWnd, IDOK);
+		return TRUE;
+
+	case WM_COMMAND:
+		if (LOWORD(wParam) == IDOK)
+			EndDialog(hWnd, IDOK);
+		return TRUE;
+
+	default:
+		return FALSE;
+	}
+}
+
+LRESULT CALLBACK Window::WndProc(const HWND hWnd, const UINT uMsg, const WPARAM wParam, const LPARAM lParam)
 {
 	switch (uMsg) {
 	case WM_CREATE:
 		UpdateTheme();
 		SetWindowPos(hWnd, nullptr, -1, -1, Dpi(510), Dpi(412), SWP_NOZORDER|SWP_NOMOVE|SWP_NOACTIVATE);
-		SetFocus(g_elv->hWnd);
+		SetFocus(elv.hWnd);
 
 		/* Set menu item checkmarks according to saved settings. */
-		CheckMenuItem(GetMenu(hWnd), IDM_VIEW_WATCHED, g_cfg.bViewWatched? MF_CHECKED: MF_UNCHECKED);
-		CheckMenuItem(GetMenu(hWnd), IDM_VIEW_TV_ORIGINAL, g_cfg.bViewTVOriginal? MF_CHECKED: MF_UNCHECKED);
-		CheckMenuItem(GetMenu(hWnd), IDM_VIEW_OTHERS, g_cfg.limitToScreenwriter[0]? MF_UNCHECKED: MF_CHECKED);
+		CheckMenuItem(GetMenu(hWnd), IDM_VIEW_WATCHED, cfg.bViewWatched? MF_CHECKED: MF_UNCHECKED);
+		CheckMenuItem(GetMenu(hWnd), IDM_VIEW_TV_ORIGINAL, cfg.bViewTVOriginal? MF_CHECKED: MF_UNCHECKED);
+		CheckMenuItem(GetMenu(hWnd), IDM_VIEW_OTHERS, cfg.limitToScreenwriter[0]? MF_UNCHECKED: MF_CHECKED);
 		return 0;
 
 	case WM_CLOSE:
@@ -224,7 +230,7 @@ LRESULT CALLBACK HandleMsg(const HWND hWnd, const UINT uMsg, const WPARAM wParam
 		return 0;
 
 	case WM_DESTROY:
-		g_elv->SaveFocus();
+		elv.SaveFocus();
 		PostQuitMessage(0);
 		return 0;
 
@@ -270,14 +276,14 @@ LRESULT CALLBACK HandleMsg(const HWND hWnd, const UINT uMsg, const WPARAM wParam
 		else {
 			SetFocus(g_hWndFocus);
 			/* TODO: Update tracked episodes. */
-			g_elv->Redraw();
+			elv.Redraw();
 		}
 		return 0;
 
 	case WM_NOTIFY:
 		switch (reinterpret_cast<NMHDR*>(lParam)->idFrom) {
 		case IDC_EPISODELISTVIEW:
-			return g_elv->HandleNotify(lParam);
+			return elv.HandleNotify(lParam);
 		}
 		return 0;
 
@@ -289,7 +295,7 @@ LRESULT CALLBACK HandleMsg(const HWND hWnd, const UINT uMsg, const WPARAM wParam
 			HandleMainMenu(hWnd, command);
 			return 0;
 		case IDG_CTX:
-			g_elv->HandleContextMenu(command);
+			elv.HandleContextMenu(command);
 			return 0;
 		default:
 			return 0;
@@ -309,13 +315,13 @@ LRESULT CALLBACK HandleMsg(const HWND hWnd, const UINT uMsg, const WPARAM wParam
 			/*IDM_FILE_FETCH_SCREENWRITERS*/L"Fetch screenwriters from the web (may take a minute).",
 			/*IDM_FILE_FETCH_CANCEL*/L"Stop fetching data from the web.",
 			/*IDM_FILE_ABOUT*/L"Show information about Episode Browser.",
-			/*IDM_VIEW_WATCHED*/(g_cfg.bViewWatched?
+			/*IDM_VIEW_WATCHED*/(cfg.bViewWatched?
 			    L"Click to hide watched episodes.":
 			    L"Click to show watched episodes."),
-			/*IDM_VIEW_TV_ORIGINAL*/(g_cfg.bViewTVOriginal?
+			/*IDM_VIEW_TV_ORIGINAL*/(cfg.bViewTVOriginal?
 			    L"Click to hide TV original episodes.":
 			    L"Click to show TV original episodes."),
-			/*IDM_VIEW_OTHERS*/(g_cfg.limitToScreenwriter?
+			/*IDM_VIEW_OTHERS*/(cfg.limitToScreenwriter?
 			    L"Click to hide episodes by other screenwriters.":
 			    L"Click to show episodes by other screenwriters.")
 		};
@@ -349,11 +355,11 @@ LRESULT CALLBACK HandleMsg(const HWND hWnd, const UINT uMsg, const WPARAM wParam
 	    }
 
 	case WM_LBUTTONDOWN:
-		g_dragDlv.HandleLButtonDown();
+		dragDlv.HandleLButtonDown();
 		return 0;
 
 	case WM_SETCURSOR:
-		if (g_dragDlv.HandleSetCursor())
+		if (dragDlv.HandleSetCursor())
 			return 1;
 		else {
 			/* Use default cursor. */
@@ -368,7 +374,7 @@ LRESULT CALLBACK HandleMsg(const HWND hWnd, const UINT uMsg, const WPARAM wParam
 	}
 }
 
-void HandleMainMenu(const HWND hWnd, const WORD command)
+void Window::HandleMainMenu(const HWND hWnd, const WORD command)
 {
 	switch (command) {
 	case IDM_FILE_EXIT:
@@ -376,7 +382,7 @@ void HandleMainMenu(const HWND hWnd, const WORD command)
 		break;
 
 	case IDM_FILE_REFRESH:
-		g_elv->Update();
+		elv.Update();
 		break;
 
 	case IDM_FILE_FETCH_DATA:
@@ -402,61 +408,44 @@ void HandleMainMenu(const HWND hWnd, const WORD command)
 		break;
 
 	case IDM_VIEW_WATCHED:
-		CheckMenuItem(GetMenu(hWnd), IDM_VIEW_WATCHED, g_cfg.bViewWatched? MF_UNCHECKED: MF_CHECKED);
-		g_cfg.bViewWatched = !g_cfg.bViewWatched;
-		g_elv->Update();
-		g_elv->EnsureFocusVisible();
+		CheckMenuItem(GetMenu(hWnd), IDM_VIEW_WATCHED, cfg.bViewWatched? MF_UNCHECKED: MF_CHECKED);
+		cfg.bViewWatched = !cfg.bViewWatched;
+		elv.Update();
+		elv.EnsureFocusVisible();
 		/* TODO: Remember last valid focus. In case of
 		 * non-existing focus, use the last valid focus. */
 		break;
 
 	case IDM_VIEW_TV_ORIGINAL:
-		CheckMenuItem(GetMenu(hWnd), IDM_VIEW_TV_ORIGINAL, g_cfg.bViewTVOriginal? MF_UNCHECKED: MF_CHECKED);
-		g_cfg.bViewTVOriginal = !g_cfg.bViewTVOriginal;
-		g_elv->Update();
-		g_elv->EnsureFocusVisible();
+		CheckMenuItem(GetMenu(hWnd), IDM_VIEW_TV_ORIGINAL, cfg.bViewTVOriginal? MF_UNCHECKED: MF_CHECKED);
+		cfg.bViewTVOriginal = !cfg.bViewTVOriginal;
+		elv.Update();
+		elv.EnsureFocusVisible();
 		break;
 
 	case IDM_VIEW_OTHERS:
-		if (g_cfg.limitToScreenwriter[0]) { /* Show episodes by all screenwriters. */
+		if (cfg.limitToScreenwriter[0]) { /* Show episodes by all screenwriters. */
 			CheckMenuItem(GetMenu(hWnd), IDM_VIEW_OTHERS, MF_CHECKED);
-			g_cfg.limitToScreenwriter[0] = 0;
+			cfg.limitToScreenwriter[0] = 0;
 		} else { /* Hide episodes by other screenwriters than current. */
 			LVITEM lvi = {LVIF_PARAM, -1};
-			if (g_elv->FindNextItem(&lvi, LVNI_FOCUSED)
-			    && g_fvDlv.At(lvi.lParam-1).screenwriter[0]) {
-				Wcscpy(g_cfg.limitToScreenwriter, g_fvDlv.At(lvi.lParam-1).screenwriter);
+			if (elv.FindNextItem(&lvi, LVNI_FOCUSED)
+			    && fvDlv.At(lvi.lParam-1).screenwriter[0]) {
+				Wcscpy(cfg.limitToScreenwriter, fvDlv.At(lvi.lParam-1).screenwriter);
 				CheckMenuItem(GetMenu(hWnd), IDM_VIEW_OTHERS, MF_UNCHECKED);
 			}
 		}
-		g_elv->Update();
-		g_elv->EnsureFocusVisible();
+		elv.Update();
+		elv.EnsureFocusVisible();
 		break;
 	}
 }
 
-INT_PTR CALLBACK AboutDlgProc(const HWND hWnd, const UINT uMsg, const WPARAM wParam, const LPARAM)
-{
-	switch (uMsg) {
-	case WM_CLOSE:
-		EndDialog(hWnd, IDOK);
-		return TRUE;
-
-	case WM_COMMAND:
-		if (LOWORD(wParam) == IDOK)
-			EndDialog(hWnd, IDOK);
-		return TRUE;
-
-	default:
-		return FALSE;
-	}
-}
-
-void UpdateTheme()
+void Window::UpdateTheme()
 {
 	if (IsThemeActive) {
 		const bool bThemeActive = IsThemeActive();
-		g_dlv->UpdateTheme(bThemeActive);
-		g_elv->UpdateTheme(bThemeActive);
+		dlv.UpdateTheme(bThemeActive);
+		elv.UpdateTheme(bThemeActive);
 	}
 }
diff --git a/c/test.cpp b/c/test.cpp
index 6e291c7..35c6904 100644
--- a/c/test.cpp
+++ b/c/test.cpp
@@ -4,10 +4,11 @@
 #include "data.h"
 #include "episodelistview.h"
 #include "ext.h"
+#include "main.h"
 #include "util.h"
 #include "win.h"
 
-extern CfgA& g_cfg;
+extern Window* g_window;
 
 struct Test
 {
@@ -35,9 +36,8 @@ TESTS
 
 	TEST(IO)
 	{
-		extern FileView<ElvDataA> g_fvElv;
-		ElvDataA& e1_0 = g_fvElv.At(5);
-		ElvDataA& e2_0 = g_fvElv.At(9);
+		ElvDataA& e1_0 = g_window->fvElv.At(5);
+		ElvDataA& e2_0 = g_window->fvElv.At(9);
 
 		/* Write two ElvDataA structs to disk. */
 		{
@@ -91,7 +91,7 @@ TESTS
 // 	TEST(MigrateCfg)
 // 	{
 // 		FileView<CfgB> fvb = FileView<CfgB>::Initialized(L"cfgb.dat", 1);
-// 		CfgA* a = &g_cfg;
+// 		CfgA* a = &g_window->cfg;
 // 		CfgB* b = fvb+0;
 
 // #define CPY(member) b->member = a->member;
diff --git a/c/win.cpp b/c/win.cpp
index e1349bc..40d68e4 100644
--- a/c/win.cpp
+++ b/c/win.cpp
@@ -4,6 +4,7 @@
 #include <windows.h>
 #include <wininet.h>
 
+#include "main.h"
 #include "util.h"
 #include "win.h"
 
@@ -86,9 +87,9 @@ static void CenterNextWindow(HWND hWnd)
 
 int EBMessageBox(const std::wstring_view text, const std::wstring_view caption, const UINT uType)
 {
-	extern HWND g_hWnd;
-	CenterNextWindow(g_hWnd);
-	return MessageBox(g_hWnd, text.data(), caption.data(), uType);
+	extern Window* g_window;
+	CenterNextWindow(g_window->hWnd);
+	return MessageBox(g_window->hWnd, text.data(), caption.data(), uType);
 }
 
 void ShowException(const wchar_t* const fmt, const wchar_t* const title, const UINT uType) noexcept