REFERENCE GUIDE

GetBkModeReturn valueThe return value specifies the current background mode. It can beOP AQUE or TRANSPARENT.GetBrushOrgSyntaxDWORD GetBrushOrg(hDC)function GetBrushOrg(DC: HDC): Longint;This function retrieves the current brush origin for the given devicecontext.Parameters hDC H DC Identifies the device context.Return value The return value specifies the current origin of the brush. The x­coordinate is in the low word, and the y-coordinate is in the high word.The coordinates are assumed to be in device units.Comments The initial brush origin is at the coordinate (0,0).GetBValueSyntaxBYTE GetBValue(rgbColor)function GetBValue(RGBColor: Longint): Byte;This macro extracts the blue value from an RGB color value.Parameters rgbColor DWORD Specifies a red, a green, and a blue color field, eachspecifying the intensity of the given color.Return valueCommentsThe return value specifies a byte that contains the blue value of thergbColor parameter.The value OFFH corresponds to the maximum intensity value for a singlebyte; OOOH corresponds to the minimum intensity value for a single byte.GetCaptureSyntax HWND GetCapture( )function GetCapture: HWnd;This function retrieves a handle that identifies the window that has themouse capture. Only one window has the mouse capture at any giventime; this window receives mouse input whether or not the cursor iswithin its borders.290Software development kit