Reference for package '#rtl'

gpm_pushroi

Push region of interest on the stack.

Declaration

Source position: gpm.pp line 193

  function gpm_pushroi(x1: LongInt; y1: LongInt; x2: LongInt; 
                      y2: LongInt; mask: LongInt; fun: TGpmHandler; 
                      xtradata: pointer) : Pgpm_roi;

Description

Gpm_PushRoi puts a new region of interest on the stack. The region of interest is defined by a rectangle described by the corners (X1,Y1) and (X2,Y2).

The mask describes which events the handler {fun} will handle; ExtraData will be put in the xtradata field of the {TGPM_Roi} record passed to the fun handler.

Errors

None.

See also

Name Description
Gpm_LowerRoi Lower a region of interest in the stack.
Gpm_PopRoi Pop region of interest from the stack.
Gpm_RaiseRoi Raise region of interest in the stack.