GreGetViewingLimits

GreGetViewingLimits loads the array indicated by prclViewingLimits with the boundaries of the viewing window in graphic model-space coordinates. All boundaries are inclusive.

This function can be hooked by the presentation driver.

Simulation support

This function is simulated by a handling routine in the graphics engine.

Syntax

fSuccess = GreGetViewingLimits(hdc, prclViewingLimits, pInstance, lFunction)

Parameters

hdc (HDC) - input

Device context handle.

prclViewingLimits (PRECTL) - input

Pointer to limits of viewing area (RECTL structure)

pInstance (PVOID) - input

Pointer to instance data.

lFunction (ULONG) - input

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

Return Code

fSuccess (BOOL) - returns

Return codes.

This function returns 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_HDC_BUSY
• PMERR_INV_HDC

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