def __del__(self):
try:
if self._dc:
gdi32.DeleteDC(self._dc)
if self._bitmap:
gdi32.DeleteObject(self._bitmap)
except:
pass
def _create_bitmap(self, width, height):
self._black = gdi32.GetStockObject(BLACK_BRUSH)
self._white = gdi32.GetStockObject(WHITE_BRUSH)
if self._dc:
gdi32.ReleaseDC(self._dc)
if self._bitmap:
gdi32.DeleteObject(self._bitmap)
pitch = width * 4
data = POINTER(c_byte * (height * pitch))()
info = BITMAPINFO()
info.bmiHeader.biSize = sizeof(info.bmiHeader)
info.bmiHeader.biWidth = width
info.bmiHeader.biHeight = height
info.bmiHeader.biPlanes = 1
info.bmiHeader.biBitCount = 32
info.bmiHeader.biCompression = BI_RGB
self._dc = gdi32.CreateCompatibleDC(c_void_p())
self._bitmap = gdi32.CreateDIBSection(c_void_p(), byref(info),
DIB_RGB_COLORS, byref(data),
c_void_p(), 0)
# Spookiness: the above line causes a "not enough storage" error,
# even though that error cannot be generated according to docs,
# and everything works fine anyway. Call SetLastError to clear it.
kernel32.SetLastError(0)
self._bitmap_data = data.contents
self._bitmap_rect = RECT()
self._bitmap_rect.left = 0
self._bitmap_rect.right = width
self._bitmap_rect.top = 0
self._bitmap_rect.bottom = height
self._bitmap_height = height
if _debug_font:
_debug('%r._create_dc(%d, %d)' % (self, width, height))
_debug('_dc = %r' % self._dc)
_debug('_bitmap = %r' % self._bitmap)
_debug('pitch = %r' % pitch)
_debug('info.bmiHeader.biSize = %r' % info.bmiHeader.biSize)
def __del__(self):
if self._dc:
gdi32.DeleteDC(self._dc)
if self._bitmap:
gdi32.DeleteObject(self._bitmap)