DrawEscape
The DrawEscape
function accesses drawing capabilities of a video display that are not directly
available through the graphics device interface (GDI).
int DrawEscape(
|
HDC hdc, |
// handle to device
context |
|
int nEscape, |
// specifies escape
function |
|
int cbInput, |
// size of
structure for input |
|
LPCSTR lpszInData |
// pointer to
structure for input |
|
); |
|
Parameters
hdc
Identifies
the device context for the specified video display.
nEscape
Specifies the
escape function to be performed.
cbInput
Specifies the
number of bytes of data pointed to by the lpszInData parameter.
lpszInData
Points to the
input structure required for the specified escape.
Return Values
The return
value specifies the outcome of the function. It is greater than zero if the
function is successful, except for the QUERYESCSUPPORT draw escape, which
checks for implementation only. The return value is zero if the escape is not
implemented. The return value is less than zero if an error occurred. To get
extended error information, call GetLastError11C2VS7.
Remarks
When an
application calls the DrawEscape function, the data identified by cbInput
and lpszInData is passed directly to the specified display driver.