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. |