The ExcludeClipRect function creates a new clipping region that consists of the existing clipping region minus the specified rectangle.
int ExcludeClipRect(
HDC hdc, |
// handle to device context |
int nLeftRect, |
// x-coordinate of upper-left corner of rectangle |
int nTopRect, |
// y-coordinate of upper-left corner of rectangle |
int nRightRect, |
// x-coordinate of lower-right corner of rectangle |
int nBottomRect |
// y-coordinate of lower-right corner of rectangle |
); |
The return value specifies the new clipping region’s complexity; it can be any one of the following values:
Value |
Meaning |
NULLREGION |
Region is empty. |
SIMPLEREGION |
Region is a single rectangle. |
COMPLEXREGION |
Region is more than one rectangle. |
ERROR |
No region was created. |
The lower and right edges of the specified rectangle are not excluded from the clipping region.
file: /Techref/os/win/api/win32/func/src/f22_15.htm, 3KB, , updated: 2000/4/7 12:19, local time: 2024/8/23 05:41,
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