def OnPaint(self, event):
ps = PAINTSTRUCT()
ps.fErase = True
hdc = self.BeginPaint(ps)
rect = self.GetClientRect()
status, graphics = gdiplus.GdipCreateFromHDC(hdc)
status = gdiplus.GdipGraphicsClear(graphics, self.color_background)
self.grid.draw(graphics)
gdiplus.GdipDeleteGraphics(graphics)
self.EndPaint(ps)
def OnMouseMove(self, event):
self.grid.current_point = GET_POINT_LPARAM(event.lParam)
if self.grid.is_cell_changed():
hdc = self.GetDC()
status, graphics = gdiplus.GdipCreateFromHDC(hdc)
clip_rect = self.grid.current_cell + self.grid.old_cell
status = gdiplus.GdipSetClipRectI(graphics, clip_rect.left,
clip_rect.top, clip_rect.width,
clip_rect.height,
gdiplus.CombineModeReplace)
status = gdiplus.GdipGraphicsClear(graphics, self.color_background)
self.grid.draw(graphics)
gdiplus.GdipDeleteGraphics(graphics)
self.ReleaseDC(hdc)
def OnDestroy(self, event):
if self.graphics:
status = gdiplus.GdipDeleteGraphics(self.graphics)
application.Quit()