PatBlt
The PatBlt
function paints the given rectangle using the brush that is currently selected
into the specified device context. The brush color and the surface color(s) are
combined by using the given raster operation.
BOOL PatBlt(
|
HDC hdc, |
// handle to device
context |
|
int nXLeft, |
// x-coord. of
upper-left corner of rect. to be filled |
|
int nYLeft, |
// y-coord. of
upper-left corner of rect. to be filled |
|
int nWidth, |
// width of
rectangle to be filled |
|
int nHeight, |
// height of
rectangle to be filled |
|
DWORD dwRop |
// raster operation
code |
|
); |
|
Parameters
hdc
Identifies
the device context.
nXLeft
Specifies the
x-coordinate, in logical units, of the upper-left corner of the rectangle to be
filled.
nYLeft
Specifies the
y-coordinate, in logical units, of the upper-left corner of the rectangle to be
filled.
nWidth
Specifies the
width, in logical units, of the rectangle.
nHeight
Specifies the
height, in logical units, of the rectangle.
dwRop
Specifies the
raster operation code. This code may be one of the following values:
|
Value |
Meaning |
|
PATCOPY |
Copies the
specified pattern into the destination bitmap. |
|
PATINVERT |
Combines
the colors of the specified pattern with the colors of the destination
rectangle by using the Boolean OR operator. |
|
DSTINVERT |
Inverts the
destination rectangle. |
|
BLACKNESS |
Fills the
destination rectangle using the color associated with index 0 in the physical
palette. (This color is black for the default physical palette.) |
|
WHITENESS |
Fills the
destination rectangle using the color associated with index 1 in the physical
palette. (This color is white for the default physical palette.) |
Return Values
If the
function succeeds, the return value is nonzero.
If the
function fails, the return value is zero. To get extended error information,
call GetLastError.
Remarks
The values of
the dwRop parameter for this function are a limited subset of the full
256 ternary raster-operation codes; in particular, an operation code that
refers to a source rectangle cannot be used.
Not all
devices support the PatBlt function. For more information, see the
description of the RC_BITBLT capability in the GetDeviceCaps function.
See Also