Add comments.

1 files changed, 12 insertions, 6 deletions

diff --git a/c/main.cpp b/c/main.cpp
index 24dd6da..7dcffa6 100644
--- a/c/main.cpp
+++ b/c/main.cpp
@@ -12,6 +12,10 @@
 #include "pl.h"
 #include "util.h"
 
+/* main.cpp defines all global (non-template) variables used in the
+ * program. `extern' is used to access them from other files, when
+ * need be. */
+
 /* Looked-up constants. */
 int g_dpi = 96;
 
@@ -47,12 +51,19 @@ char g_limitScreenwriter[64];
 BOOL (*IsThemeActive)();
 BOOL (*SetWindowTheme)(HWND, LPCWSTR, LPCWSTR);
 
+/* Initialize important global state on parent window creation. */
 static LRESULT CALLBACK CBTProc(int, WPARAM, LPARAM);
+/* Process parent window commands. */
 static LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);
+/* Process main menu commands. */
 static void HandleMainMenu(HWND, unsigned short);
+/* Process context menu commands. */
 static void HandleContextMenu(HWND, unsigned short);
+/* Call Prolog predicate in other thread, if available. */
 static void WaitFor(const char*, const char*);
+/* 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();
 
 void OnTerminate() noexcept
@@ -89,7 +100,7 @@ int WINAPI WinMain(const HINSTANCE hInstance, const HINSTANCE, char* const, cons
 	std::set_terminate(OnTerminate);
 
 	/* Initialize Prolog. */
-	char* argv[] = { (char*)"EpisodeBrowser", NULL };
+	char* argv[] = { const_cast<char*>("EpisodeBrowser"), NULL };
 	if (!PL_initialise(1, argv))
 		throw std::runtime_error("Could not initialize Prolog.");
 	if (!Pl("track_episodes","attach") || !Pl("episode_data","attach"))
@@ -367,7 +378,6 @@ LRESULT CALLBACK WndProc(const HWND hWnd, const UINT uMsg, const WPARAM wParam,
 	return 0;
 }
 
-/* Process main menu commands. */
 void HandleMainMenu(const HWND hWnd, unsigned short command)
 {
 	switch (command) {
@@ -434,7 +444,6 @@ void HandleMainMenu(const HWND hWnd, unsigned short command)
 	}
 }
 
-/* Process context menu commands. */
 void HandleContextMenu(const HWND, unsigned short command)
 {
 	int cNotFound = 0;
@@ -493,7 +502,6 @@ void HandleContextMenu(const HWND, unsigned short command)
 	}
 }
 
-/* Call Prolog predicate in other thread, if available. */
 void WaitFor(const char* mod, const char* pred)
 {
 	static atom_t aThread;
@@ -540,7 +548,6 @@ void WaitFor(const char* mod, const char* pred)
 	}
 }
 
-/* Handle messages to Help > About dialog. */
 INT_PTR CALLBACK AboutDlgProc(const HWND hWnd, const UINT uMsg, const WPARAM wParam, const LPARAM)
 {
 	switch (uMsg) {
@@ -561,7 +568,6 @@ INT_PTR CALLBACK AboutDlgProc(const HWND hWnd, const UINT uMsg, const WPARAM wPa
 	return TRUE;
 }
 
-/* Try to style application according to current Windows theme. */
 void UpdateTheme()
 {
 	if (!IsThemeActive) return;