WM CALCFRAMERECT

This message occurs when an application uses the WinCalcFrameRect function.

Syntax

param1
    PRECTL pRect;   /* Rectangle structure. */

param2
    USHORT usFrame; /* Frame indicator. */

Parameters

pRect (PRECTL) - input/output

Points to a RECTL structure.

usFrame (USHORT) - input

Frame indicator.

TRUE: Frame rectangle provided

FALSE: Client area rectangle provided

Returns

rc (BOOL) - returns

Rectangle-calculated indicator.

TRUE: Successful completion

FALSE: Error occurred or the calculated rectangle is empty

Remarks

This message is sent to the frame control to perform the appropriate calculation. If the low word of MP2 is TRUE, the RECTL structure in MP1 contains a frame window and this message calculates the RECTL of the client. If the low word of MP2 is FALSE, MP1 contains a client window and this message calculates the RECTL of the frame.

in Frame Controls

Frame control calculates the appropriate rectangle, taking into account byte alignment, or nonbyte alignment if FCF_NOBYTEALIGN is specified.

Default Processing

The default window procedure takes no action on this message, other than to set rc to FALSE.

in Frame Controls

The default window procedure takes no action on this message, other than to set rc to FALSE.

Related Messages

• WM_CALCFRAMERECT (in Frame Controls)