| int ExcludeClipRect(hdc, nLeftRect, nTopRect, nRightRect, nBottomRect) | |||||
| HDC hdc; | /* device-context handle | */ | |||
| int nLeftRect; | /* x-coordinate top-left corner of rectangle | */ | |||
| int nTopRect; | /* y-coordinate top-left corner of rectangle | */ | |||
| int nRightRect; | /* x-coordinate bottom-right corner of rectangle | */ | |||
| int nBottomRect; | /* y-coordinate bottom-right corner of rectangle | */ | |||
The ExcludeClipRect function creates a new clipping region that consists of the existing clipping region minus the specified rectangle.
hdc
Identifies the device context.
nLeftRect
Specifies the logical x-coordinate of the upper-left corner of the rectangle.
nTopRect
Specifies the logical y-coordinate of the upper-left corner of the rectangle.
nRightRect
Specifies the logical x-coordinate of the lower-right corner of the rectangle.
nBottomRect
Specifies the logical y-coordinate of the lower-right corner of the rectangle.
The return value specifies the new clipping region's type if the function is successful. It can be any one of the following values:
| Value | Meaning |
| COMPLEXREGION | The region has overlapping borders. |
| ERROR | No region was created. |
| NULLREGION | The region is empty. |
| SIMPLEREGION | The region has no overlapping borders. |
The lower and right edges of the given rectangle are not excluded from the clip region.
IntersectClipRect