 |
SetWindowRgn
..msdn Add comment W32 Constants Translate this page |
|
|
|
Sets the window region of a window. The window region determines the area within the window where the system permits drawing. The system does not display any portion of a window that lies outside of the window region |
|
|
| Code examples: |
|
|
|
|
|
| Declaration: |
|
|
int SetWindowRgn(
HWND hWnd, // handle to window
HRGN hRgn, // handle to region
BOOL bRedraw // window redraw option
);
|
|
|
|
| FoxPro declaration: |
|
|
DECLARE SetWindowRgn IN user32;
INTEGER hWnd,;
INTEGER hRgn,;
SHORT bRedraw
|
|
|
|
| Parameters: |
|
hWnd
[in] Handle to the window whose window region is to be set.
hRgn
[in] Handle to a region. The function sets the window region of the window to this region.
If hRgn is NULL, the function sets the window region to NULL.
bRedraw
[in] Specifies whether the system redraws the window after setting the window region. If bRedraw is TRUE, the system does so; otherwise, it does not. Typically, you set bRedraw to TRUE if the window is visible.
|
|
|
| Return value: |
|
If the function succeeds, the return value is nonzero. If the function fails, the return value is zero.
|
|
|
| My comment: |
|
After a successful call to SetWindowRgn, the system owns the region specified by the region handle hRgn. The system does not make a copy of the region. Thus, you should not make any further function calls with this region handle. In particular, do not delete this region handle. The system deletes the region handle when it no longer needed.
To obtain the window region of a window, call the GetWindowRgn function. |
|
|
| Word Index links for the SetWindowRgn : |
|
|
|
|
|
| Translate this page: |
|
|
|
|
| • |
|
| Created: | 2001-08-26 12:00:00 | | Modified: | 2001-11-26 16:03:24 |
Visited in last 7 days: 42 |
Creating irregularly shaped FoxPro form using transparency color key 