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Codechange: demystify some magic numbers and document callback

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Rubidium
2026-02-18 22:56:54 +01:00
committed by rubidium42
parent d067bfe577
commit aeadfb2f67
1 changed files with 16 additions and 4 deletions
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src/os/windows/win32.cpp
+16 -4
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@@ -181,18 +181,30 @@ static std::string ConvertLfToCrLf(std::string_view msg)
return output;
}
/** Callback function to handle the window */
/**
* Callback function to handle the window.
*
* Relates to the resource with id 101 in ottdres.rc.in.
* @param wnd Handle to the window.
* @param msg The dialog message to handle.
* @param wParam Message specific data; for \c WM_COMMAND the id of the button.
* @param lParam Message specific data; for \c WM_INITDIALOG a pointer to a std::wstring containing the dialog text.
* @return \c TRUE when the message is handled, otherwise \c FALSE.
*/
static INT_PTR CALLBACK HelpDialogFunc(HWND wnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
static constexpr int TEXT_CONTROL = 11;
static constexpr int OK_BUTTON = 12;
switch (msg) {
case WM_INITDIALOG: {
std::wstring &msg = *reinterpret_cast<std::wstring *>(lParam);
SetDlgItemText(wnd, 11, msg.c_str());
SendDlgItemMessage(wnd, 11, WM_SETFONT, (WPARAM)GetStockObject(ANSI_FIXED_FONT), FALSE);
SetDlgItemText(wnd, TEXT_CONTROL, msg.c_str());
SendDlgItemMessage(wnd, TEXT_CONTROL, WM_SETFONT, (WPARAM)GetStockObject(ANSI_FIXED_FONT), FALSE);
} return TRUE;
case WM_COMMAND:
if (wParam == 12) ExitProcess(0);
if (wParam == OK_BUTTON) ExitProcess(0);
return TRUE;
case WM_CLOSE:
ExitProcess(0);