GreGetStyleRatio

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GreGetStyleRatio stores the style ratio X-direction and Y-direction step values at the location addressed by pRatio.

Simulation support
This function is mandatory for display drivers. For other drivers, it is simulated by a handling routine in the graphics engine.

Syntax

GreGetStyleRatio(hdc, pRatio, pInstance, lFunction)

Parameters

hdc (HDC) - input
The device context handle.
pRatio (PBYTE) - input
A pointer to a style ratio value.
The style ratio is defined as a 2-byte value. The low-order byte indicates a step in the X-direction, the high-order byte a step in the Y-direction.
pInstance (PVOID) - input
A pointer to instance data.
lFunction (ULONG) - input
High-order WORD=flags; low-order WORD=NGreGetStyleRatio.

Returns

fSuccess (BOOL) - returns 
Return codes.

On completion, the handling routine must return BOOLEAN (fSuccess).

  • 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