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DesignerGlyph.OnPaint Method

  • Reference

Definition

Namespace:
System.Workflow.ComponentModel.Design
Assembly:
System.Workflow.ComponentModel.dll

When overridden in a derived class, performs any tasks required to render the glyph on the activity designer surface.

protected:
 abstract void OnPaint(System::Drawing::Graphics ^ graphics, bool activated, System::Workflow::ComponentModel::Design::AmbientTheme ^ ambientTheme, System::Workflow::ComponentModel::Design::ActivityDesigner ^ designer);
protected abstract void OnPaint (System.Drawing.Graphics graphics, bool activated, System.Workflow.ComponentModel.Design.AmbientTheme ambientTheme, System.Workflow.ComponentModel.Design.ActivityDesigner designer);
abstract member OnPaint : System.Drawing.Graphics * bool * System.Workflow.ComponentModel.Design.AmbientTheme * System.Workflow.ComponentModel.Design.ActivityDesigner -> unit
Protected MustOverride Sub OnPaint (graphics As Graphics, activated As Boolean, ambientTheme As AmbientTheme, designer As ActivityDesigner)

Parameters

graphics
Graphics

The Graphics to perform fill and drawing tasks.

activated
Boolean

true to indicate that the glyph appears on the design surface; otherwise, false.

ambientTheme
AmbientTheme

The AmbientTheme to use to access ambient property settings.

designer
ActivityDesigner

The ActivityDesigner from which to obtain information about user actions.

Examples

The following code example demonstrates how you can override the OnPaint method. The code customizes how to draw the glyph object on the activity designer with which the glyph is associated.

This code example is part of the Workflow Monitor SDK Sample from the DesignerGlyphProvider.cs file. For more information, see Workflow Monitor.

protected override void OnPaint(Graphics graphics, bool activated, AmbientTheme ambientTheme, ActivityDesigner designer)
{
    Bitmap bitmap = Resources.Executing;
    bitmap.MakeTransparent(Color.FromArgb(0, 255, 255));
    if (bitmap != null)
        graphics.DrawImage(bitmap, GetBounds(designer, activated), new Rectangle(Point.Empty, bitmap.Size), GraphicsUnit.Pixel);
}

Protected Overrides Sub OnPaint(ByVal graphics As System.Drawing.Graphics, ByVal activated As Boolean, ByVal ambientTheme As System.Workflow.ComponentModel.Design.AmbientTheme, ByVal designer As System.Workflow.ComponentModel.Design.ActivityDesigner)
    Dim bitmap As Bitmap = AppResources.Executing
    bitmap.MakeTransparent(Color.FromArgb(0, 255, 255))

    If Not bitmap Is Nothing Then
        graphics.DrawImage(bitmap, GetBounds(designer, activated), New Rectangle(Point.Empty, bitmap.Size), GraphicsUnit.Pixel)
    End If
End Sub

Remarks

OnPaint uses CommentIndicatorPen to draw the bounds of the comment glyph and CommentIndicatorBrush to fill it.

Applies to

See also