GreDeviceQueryFontAttributes

GreDeviceQueryFontAttributes stores the metrics of the currently selected font at the location addressed by pfmMetrics. Note that the handling routine must transform device coordinates to world coordinates before returning the results to the calling routine. This transformation can be done by using GreConvert.

This function must be supported by the presentation driver.

Simulation support

None. This function is mandatory for all drivers.

Syntax

GreDeviceQueryFontAttributes(hdc, cMetrics, pfmMetrics, pInstance, lFunction);

Parameters

hdc (HDC) - input

Device context handle.

cMetrics (ULONG) - input

Size of FONTMETRICS structure.

pfmMetrics (PFONTMETRICS) - input

Pointer to FONTMETRICS structure.

pInstance (PVOID) - input

Pointer to instance data.

lFunction (ULONG) - input

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

Return Code

rc (BOOL) - returns

Return Codes.

On completion, the handling routine must return a BOOLEAN value to indicate success or an error.

• TRUE Successful
• FALSE Error

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

• PMERR_DEV_FUNC_NOT_INSTALLED
• PMERR_INV_HDC

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

Remarks

GreDeviceQueryFontAttributes is called from the graphics engine internal function GreQueryFontAttributes in response to an application calling one of the GpiQueryFontxxx() APIs. This call can be handled by bit-map simulation.