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Fixed issue with GDI controls not always being visible

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Reverted an earlier optimization that tried to handle WM_ERASEBKGND and
WM_PAINT events in a single update cycle for reduced flickering.
It caused some child controls to not display properly.

Fixes an issue reported in #15.
This commit is contained in:
narzoul 2017-07-16 22:39:56 +02:00
parent d2adc5c811
commit c63d36d831
1 changed files with 13 additions and 25 deletions
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38
DDrawCompat/Gdi/PaintHandlers.cpp
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@ -156,36 +156,24 @@ namespace
LRESULT onEraseBackground(HWND hwnd, HDC dc, WNDPROC origWndProc) LRESULT onEraseBackground(HWND hwnd, HDC dc, WNDPROC origWndProc)
{ {
if (!hwnd || !Gdi::beginGdiRendering()) if (hwnd && Gdi::beginGdiRendering())
{ {
return CallWindowProc(origWndProc, hwnd, WM_ERASEBKGND, reinterpret_cast<WPARAM>(dc), 0); LRESULT result = 0;
} HDC compatDc = Gdi::Dc::getDc(dc);
if (compatDc)
LRESULT result = 0;
HDC compatDc = Gdi::Dc::getDc(dc);
if (compatDc)
{
result = CallWindowProc(origWndProc, hwnd, WM_ERASEBKGND, reinterpret_cast<WPARAM>(compatDc), 0);
Gdi::Dc::releaseDc(dc);
if (result)
{ {
DDraw::RealPrimarySurface::disableUpdates(); result = CallWindowProc(origWndProc, hwnd, WM_ERASEBKGND, reinterpret_cast<WPARAM>(compatDc), 0);
Gdi::Dc::releaseDc(dc);
}
Gdi::endGdiRendering();
if (compatDc)
{
return result;
} }
} }
else
{
result = CallWindowProc(origWndProc, hwnd, WM_ERASEBKGND, reinterpret_cast<WPARAM>(dc), 0);
}
Gdi::endGdiRendering(); return CallWindowProc(origWndProc, hwnd, WM_ERASEBKGND, reinterpret_cast<WPARAM>(dc), 0);
if (result && compatDc)
{
UpdateWindow(hwnd);
DDraw::RealPrimarySurface::enableUpdates();
}
return result;
} }
LRESULT onMenuPaint(HWND hwnd, WNDPROC origWndProc) LRESULT onMenuPaint(HWND hwnd, WNDPROC origWndProc)