gpm_pushroi function
Push region of interest on the stack.
Declaration
function gpm_pushroi(x1: LongInt; y1: LongInt; x2: LongInt;
y2: LongInt; mask: LongInt; fun: TGpmHandler;
xtradata: pointer): Pgpm_roiDescription
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
An experiment, built from development snapshots. Not the official Free Pascal or Lazarus documentation.
