TCanvas.Pixels property
The color of the
Pixels located at the specified position.
Declaration
property Pixels[X: Integer;Y: Integer]: TColor read GetPixel write SetPixel;Description
Pixels is an indexed
TColor color property which
provides access to the color for pixels on the drawing surface. The
X and
Y arguments provide the horizontal and vertical
offsets on the drawing surface.
Read and write access to color values in the property requires a valid
Handle (or device context) for the canvas.
RequiredState is called, and allocates a Handle if one does not
already exist. An EInvalidGraphicOperation exception may be raised
in the method if a valid handle cannot be acquired.
Methods in the widgetset class are called to read or write the pixel color using the Handle.
When setting a new color for a pixel, the Changing method is
called to signal the OnChanging event handler (when assigned).
After setting the new color, the Changed method is called to
signal the OnChange event handler (when assigned).
See also
An experiment, built from development snapshots. Not the official Free Pascal or Lazarus documentation.