The GetClipRgn function retrieves a handle identifying the current application-defined clipping region for the specified device context.
int GetClipRgn(
HDC hdc, |
// handle of device context |
HRGN hrgn |
// handle of region |
); |
If the function succeeds and there is no clipping region for the given device context, the return value is zero. If the function succeeds and there is a clipping region for the given device context, the return value is 1. If an error occurs, the return value is - 1. To get extended error information, call GetLastError.
An application-defined clipping region is a clipping region identified by the SelectClipRgn function. It is not a clipping region created when the application calls the BeginPaint function.
If the function succeeds, the hrgn parameter identifies a copy of the current clipping region. Subsequent changes to this copy will not affect the current clipping region.
file: /Techref/os/win/api/win32/func/src/f28_15.htm, 2KB, , updated: 2001/6/24 10:37, local time: 2024/8/16 10:16,
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