This function sets the background mix mode of the specified device context. The background mix mode is used with text, hatched brushes, and with non-solid pen styles.
At a Glance
| Header file: | Wingdi.h |
| Windows CE versions: | 1.0 and later |
Syntax
int SetBkMode(HDC hdc, int iBkMode);
Parameters
hdc
[in] Handle to the device context.
iBkMode
[in] Specifies the background mode. It is either of the following values:
| Value | Description |
| OPAQUE | Background is filled with the current background color before the text, hatched brush, or pen is drawn. |
| TRANSPARENT | Background remains untouched. |
Return Values
If the function succeeds, the return value specifies the previous background mode.
If the function fails, the return value is zero. To get extended error information, call GetLastError.
Remarks
The SetBkMode function affects the line styles for lines drawn using a pen created by the CreatePen function. SetBkMode does not affect lines drawn using a pen created by the ExtCreatePen function.
The iBkMode parameter can also be set to driver-specific values. GDI passes such values to the device driver and otherwise ignores them.
The iBKMode parameter is stored internally as a single byte.
See Also