TLazCanvas.DoCopyRect procedure
Performs actions needed to copy a source rectangle from the specified canvas.
Declaration
procedure DoCopyRect(x: Integer; y: Integer; canvas: TFPCustomCanvas;
const SourceRect: TRect); overrideArguments
x | Left coordinate where the copied values are stored on the Lazarus canvas. |
y | Top coordinate where the copied values are stored on the Lazarus canvas. |
canvas | Canvas instance that is the source for the values copied in the method. |
SourceRect | TRect instance with the Canvas coordinates copied in the method. |
Description
DoCopyRect is an overridden method in
TLazCanvas. It is
used to copy values from the specified source rectangle in the Canvas argument
to the location specified in X and Y. DoCopyRect reimplements the method from
an ancestor class (TFPPixelCanvas).
X and
Y contain the left, top coordinates on the Lazarus
canvas where the copied values are stored.
Canvas is the TFPCustomCanvas instance with the values for the
SourceRect argument.
SourceRect is the TRect instance width the Left, Top, Right and
Bottom coordinates for the rectangular region copied from Canvas.
DoCopyRect calls the CanvasCopyRect method to perform the actions needed to perform the copy operation using the specified arguments.
See also
An experiment, built from development snapshots. Not the official Free Pascal or Lazarus documentation.