Function GetObject

pydevd_attach_to_process/winappdbg/win32/gdi32.py:443–489

(hgdiobj, cbBuffer=None, lpvObject=None)

#   __out  LPVOID lpvObject
# );
def GetObject(hgdiobj, cbBuffer=None, lpvObject=None):
    _GetObject = windll.gdi32.GetObject
    _GetObject.argtypes = [HGDIOBJ, ctypes.c_int, LPVOID]
    _GetObject.restype = ctypes.c_int
    _GetObject.errcheck = RaiseIfZero

    # Both cbBuffer and lpvObject can be omitted, the correct
    # size and structure to return are automatically deduced.
    # If lpvObject is given it must be a ctypes object, not a pointer.
    # Always returns a ctypes object.

    if cbBuffer is not None:
        if lpvObject is None:
            lpvObject = ctypes.create_string_buffer("", cbBuffer)
    elif lpvObject is not None:
        cbBuffer = sizeof(lpvObject)
    else:  # most likely case, both are None
        t = GetObjectType(hgdiobj)
        if t == OBJ_PEN:
            cbBuffer = sizeof(LOGPEN)
            lpvObject = LOGPEN()
        elif t == OBJ_BRUSH:
            cbBuffer = sizeof(LOGBRUSH)
            lpvObject = LOGBRUSH()
        elif t == OBJ_PAL:
            cbBuffer = _GetObject(hgdiobj, 0, None)
            lpvObject = (WORD * (cbBuffer // sizeof(WORD)))()
        elif t == OBJ_FONT:
            cbBuffer = sizeof(LOGFONT)
            lpvObject = LOGFONT()
        elif t == OBJ_BITMAP:  # try the two possible types of bitmap
            cbBuffer = sizeof(DIBSECTION)
            lpvObject = DIBSECTION()
            try:
                _GetObject(hgdiobj, cbBuffer, byref(lpvObject))
                return lpvObject
            except WindowsError:
                cbBuffer = sizeof(BITMAP)
                lpvObject = BITMAP()
        elif t == OBJ_EXTPEN:
            cbBuffer = sizeof(LOGEXTPEN)
            lpvObject = LOGEXTPEN()
        else:
            cbBuffer = _GetObject(hgdiobj, 0, None)
            lpvObject = ctypes.create_string_buffer("", cbBuffer)
    _GetObject(hgdiobj, cbBuffer, byref(lpvObject))
    return lpvObject


# LONG GetBitmapBits(