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WM_PAINT more conform to docs

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git-svn-id: https://svn.code.sf.net/p/freeglut/code/trunk@1546 7f0cb862-5218-0410-a997-914c9d46530a
This commit is contained in:
dcnieho 2013-03-01 18:28:55 +00:00
parent c8177024db
commit bab8eb3423
1 changed files with 14 additions and 7 deletions
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21
freeglut/freeglut/src/mswin/fg_main_mswin.c
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@ -648,14 +648,21 @@ LRESULT CALLBACK fgPlatformWindowProc( HWND hWnd, UINT uMsg, WPARAM wParam, LPAR
case WM_PAINT:
{
PAINTSTRUCT ps;
/* Turn on the visibility in case it was turned off somehow */
window->State.Visible = GL_TRUE;
RECT rect;
InvalidateRect( hWnd, NULL, GL_FALSE ); /* Make sure whole window is repainted. Bit of a hack, but a safe one from what google turns up... */
BeginPaint( hWnd, &ps );
fghRedrawWindow( window );
EndPaint( hWnd, &ps );
if (GetUpdateRect(hWnd,&rect,FALSE))
{
/* As per docs, upon receiving WM_PAINT, first check if the update region is not empty before you call BeginPaint */
PAINTSTRUCT ps;
/* Turn on the visibility in case it was turned off somehow */
window->State.Visible = GL_TRUE;
InvalidateRect( hWnd, NULL, GL_FALSE );
BeginPaint( hWnd, &ps );
fghRedrawWindow( window );
EndPaint( hWnd, &ps );
}
}
break;