GreGetCodePage

GreGetCodePage returns the current code page. This is the default code page obtained by WinQueryProcessCp during the enabling of the DC (see EnableDeviceContext) or the code page set by GreSetCodePage.

This function must be supported by the presentation driver. GreGetCodePage is called by GpiQueryCP in response to an application requesting the currently selected code page for the device context.

Simulation support

None. This function is mandatory for all drivers.

Syntax

GreGetCodePage(hdc, pInstance, lFunction)

Parameters

hdc (HDC) - input

Device context handle.

pInstance (PVOID) - input

Pointer to instance data.

lFunction (ULONG) - input

High-order WORD=flags; low-order WORD=NGreGetCodePage.

Return Code

rc (LONG) - returns

Return Code.

On completion, the handling routine must return the current code page (lCodePage) or GPI_ERROR.

Possible Errors Detected: When an error is detected, the handling routine must call WinSetErrorInfo to post the condition. An error code for conditions that the handling routine is expected to check is:

• PMERR_DEV_FUNC_NOT_INSTALLED

Refer to the "Error Explanations" section in the Presentation Manager Programming Reference for further explanation.

Remarks

This function applies to the default font, not the currently selected font, which can be determined with a call to GreQueryFontAttributes (see GreQueryFontAttributes).

Sample Code

#define INCL_GRE_DEVMISC3
#include <os2.h>

HDC      hdc;        /*  Device context handle. */
PVOID    pInstance;  /*  Pointer to instance data. */
ULONG    lFunction;  /*  High-order WORD=flags; low-order WORD=NGreGetCodePage. */
LONG     rc;         /*  Return Code. */

rc = GreGetCodePage(hdc, pInstance, lFunction);