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STR #1681: On WIN32 WM_PAINT messages, FLTK would first render the damaged area and then set the area as valid again. While this is mostly fine on single CPU machines, multi-CPU machines may re-invalidate areas that are currently drawn, resulting in unrendered strips when another window was moved quickly across an FLTK window during its redraw phase.

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The new implementation validates the damaged area as quickly as possible, allowing new damage requests to be handled correctly, even while we are still redrawing the same damaged area.

git-svn-id: file:///fltk/svn/fltk/branches/branch-1.1@5836 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
This commit is contained in:
Matthias Melcher 2007-05-16 12:47:49 +00:00
parent 849efb47ae
commit 04ced5396e
2 changed files with 3 additions and 3 deletions
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1
CHANGES
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@ -3,6 +3,7 @@ CHANGES IN FLTK 1.1.8
- Documentation fixes (STR #1454, STR #1455, STR #1456,
STR #1457, STR #1458, STR #1460, STR #1481, STR #1578,
STR #1639, STR #1645, STR #1644)
- Fixed occasional incomplete refresh (STR #1681)
- Improved fl_down, fl_frame, added fl_box (STR #1678)
- Fixed selection of submenu items in
input_choice (STR #1676)

5
src/Fl_win32.cxx
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@ -723,12 +723,13 @@ static LRESULT CALLBACK WndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lPar
if (i->region) {
// Also tell WIN32 that we are drawing someplace else as well...
InvalidateRgn(hWnd, i->region, FALSE);
CombineRgn(i->region, i->region, R, RGN_OR);
XDestroyRegion(R);
} else {
i->region = R;
}
if (window->type() == FL_DOUBLE_WINDOW) ValidateRgn(hWnd,0);
else ValidateRgn(hWnd,i->region);
window->clear_damage((uchar)(window->damage()|FL_DAMAGE_EXPOSE));
// These next two statements should not be here, so that all update
@ -739,8 +740,6 @@ static LRESULT CALLBACK WndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lPar
fl_save_pen();
i->flush();
fl_restore_pen();
if (window->type() == FL_DOUBLE_WINDOW) ValidateRgn(hWnd,0);
else ValidateRgn(hWnd,i->region);
window->clear_damage();
} return 0;