TImageEnView.SetSelectionMarkOuterStyle

Declaration

procedure SetSelectionMarkOuterStyle(Alpha: Integer; Color: TColor; LiveUpdate: Boolean = False);

Description

When SelectionOptions is iesoMarkOuter, this method specifies how the outer area will be drawn.
If Alpha = -1 (default) a gray grid is displayed.
If Alpha >= 0 and <= 255 a solid color is painted.
Color is the blend color.
if LiveUpdate is enabled then the outer marking will be shown while dragging, otherwise only when selection has completed (mouse up). Note: Enabling this option will lower performance

Defaults:
  Alpha : -1
  Color : clWhite
  LiveUpdate: False

Examples

// Areas outside the selection will be marked with red (with 50% transparency)
ImageEnView1.SelectionOptions := ImageEnView1.SelectionOptions + [iesoMarkOuter];
ImageEnView1.SetSelectionMarkOuterStyle(128, clRed);

// Enable live drawing of outer while selecting
ImageEnView1.SetSelectionMarkOuterStyle(-1, clWhite, True);

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