TransparentBlt The TransparentBlt function performs a bit-block transfer of the color data corresponding to a rectangle of pixels from the specified source device context into a destination device context.BOOL TransparentBlt( HDC hdcDest, // handle to destination DC int nXOriginDest, // x-coord of destination upper-left corner int nYOriginDest, // y-coord of destination upper-left corner int nWidthDest, // width of destination rectangle int hHeightDest, // height of destination rectangle HDC hdcSrc, // handle to source DC int nXOriginSrc, // x-coord of source upper-left corner int nYOriginSrc, // y-coord of source upper-left corner int nWidthSrc, // width of source rectangle int nHeightSrc, // height of source rectangle UINT crTransparent // color to make transparent); Parameters hdcDest [in] Handle to the destination device context. nXOriginDest [in] Specifies the x-coordinate, in logical units, of the upper-left corner of the destination rectangle. nYOriginDest [in] Specifies the y-coordinate, in logical units, of the upper-left corner of the destination rectangle. nWidthDest [in] Specifies the width, in logical units, of the destination rectangle. hHeightDest [in] Handle to the height, in logical units, of the destination rectangle. hdcSrc [in] Handle to the source device context. nXOriginSrc [in] Specifies the x-coordinate, in logical units, of the source rectangle. nYOriginSrc [in] Specifies the y-coordinate, in logical units, of the source rectangle. nWidthSrc [in] Specifies the width, in logical units, of the source rectangle. nHeightSrc [in] Specifies the height, in logical units, of the source rectangle. crTransparent [in] The RGB color in the source bitmap to treat as transparent
The TransparentBlt function performs a bit-block transfer of the color data corresponding to a rectangle of pixels from the specified source device context into a destination device context.BOOL TransparentBlt(
HDC hdcDest, // handle to destination DC
int nXOriginDest, // x-coord of destination upper-left corner
int nYOriginDest, // y-coord of destination upper-left corner
int nWidthDest, // width of destination rectangle
int hHeightDest, // height of destination rectangle
HDC hdcSrc, // handle to source DC
int nXOriginSrc, // x-coord of source upper-left corner
int nYOriginSrc, // y-coord of source upper-left corner
int nWidthSrc, // width of source rectangle
int nHeightSrc, // height of source rectangle
UINT crTransparent // color to make transparent);
Parameters
hdcDest
[in] Handle to the destination device context.
nXOriginDest
[in] Specifies the x-coordinate, in logical units, of the upper-left corner of the destination rectangle.
nYOriginDest
[in] Specifies the y-coordinate, in logical units, of the upper-left corner of the destination rectangle.
nWidthDest
[in] Specifies the width, in logical units, of the destination rectangle.
hHeightDest
[in] Handle to the height, in logical units, of the destination rectangle.
hdcSrc
[in] Handle to the source device context.
nXOriginSrc
[in] Specifies the x-coordinate, in logical units, of the source rectangle.
nYOriginSrc
[in] Specifies the y-coordinate, in logical units, of the source rectangle.
nWidthSrc
[in] Specifies the width, in logical units, of the source rectangle.
nHeightSrc
[in] Specifies the height, in logical units, of the source rectangle.
crTransparent
[in] The RGB color in the source bitmap to treat as transparent