From 295d423cc47f9ee8a72134dc544892a03b279311 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?John=20Ankarstr=C3=B6m?= <john@ankarstrom.se>
Date: Sun, 10 Jul 2022 23:23:09 +0200
Subject: Convert to C++.

I already hit upon some object-oriented programming patterns in
*listview.c, so I felt that it would be natural to use this as an
opportunity to learn C++.
---
 c/listview.cpp | 76 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 76 insertions(+)
 create mode 100644 c/listview.cpp

(limited to 'c/listview.cpp')

diff --git a/c/listview.cpp b/c/listview.cpp
new file mode 100644
index 0000000..9f24dc3
--- /dev/null
+++ b/c/listview.cpp
@@ -0,0 +1,76 @@
+#include <windows.h>
+#include <commctrl.h>
+#include <uxtheme.h>
+
+#include "resource.h"
+#include "defs.h"
+
+extern HFONT g_hfNormal;
+extern HWND g_hWnd;
+static LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);
+
+void
+ListView::Create(HMENU hMenu, DWORD dwStyle)
+{
+	m_hWnd = CreateWindowEx(
+	    WS_EX_CLIENTEDGE,
+	    WC_LISTVIEW,
+	    TEXT(""),
+	    dwStyle
+	    |WS_CHILD|WS_VISIBLE|WS_VSCROLL|WS_TABSTOP|LVS_REPORT|LVS_SHOWSELALWAYS,
+	    0, 0, 0, 0,
+	    g_hWnd, hMenu, GetModuleHandle(NULL), this
+	);
+
+	if (SetProp(m_hWnd, TEXT("this"), (HANDLE)this))
+		m_prevProc = (WNDPROC)SetWindowLongPtr(m_hWnd,
+		    GWLP_WNDPROC, (LONG_PTR)::WndProc);
+
+	ListView_SetExtendedListViewStyle(m_hWnd, LVS_EX_FULLROWSELECT);
+
+	SendMessage(m_hWnd, WM_SETFONT, (WPARAM)g_hfNormal, MAKELPARAM(FALSE, 0));
+}
+
+/* Naively calculate height of list view. */
+int
+ListView::Height(int bHeader)
+{
+	int iCount;
+	iCount = ListView_GetItemCount(m_hWnd);
+	return iCount? Dpi(bHeader? 27: 4)+iCount*Dpi(19): 0;
+}
+
+HWND
+ListView::HWnd()
+{
+	return m_hWnd;
+}
+
+LRESULT CALLBACK
+ListView::WndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
+{
+	switch (uMsg) {
+	case WM_NOTIFY:
+		switch (((LPNMHDR)lParam)->code) {
+		case HDN_ENDTRACK:
+			UpdateLayout();
+			return TRUE;
+		}
+		break;
+	}
+
+	return CallWindowProc(m_prevProc, hWnd, uMsg, wParam, lParam);
+}
+
+static LRESULT CALLBACK
+WndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
+{
+	switch (uMsg) {
+	case WM_DESTROY:
+		RemoveProp(hWnd, TEXT("this"));
+		break;
+	}
+
+	ListView *lpThis = (ListView *)GetProp(hWnd, TEXT("this"));
+	return lpThis? lpThis->WndProc(hWnd, uMsg, wParam, lParam): FALSE;
+}
-- 
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