DrawTheme Method (UIElement)

Used by an element to render using the system theme. This method will not be invoked if the themes are not supported.

Syntax

Visual Basic

'Declaration
 
Protected Overridable Function DrawTheme( _
   ByRef drawParams As UIElementDrawParams _
) As Boolean

C#

protected virtual bool DrawTheme( 
   ref UIElementDrawParams drawParams
)

Parameters

drawParams

The UIElementDrawParams used to provide rendering information.

Return Value

Returning true will prevent the invocation of the DrawBackColor, DrawImageBackground, DrawBorders, DrawImage and DrawForeground. Return false when themes are not supported by the element or if unable to render using the system theme.

Example

To add XP theming support to your element. Simply override the virtual method DrawTheme. Use the XPThemes class to render the system based theme element.

Visual Basic

Imports Infragistics.Win

Protected Overrides Function DrawTheme(ByRef drawParams As Infragistics.Win.UIElementDrawParams) As Boolean
     
       Return XPThemes.Button.DrawPushButton( _
        drawParams, _
        Me.Rect, _
        drawParams.InvalidRect, _
        UIElementButtonState.Inactive, False)

   End Function

C#

using Infragistics.Win;

protected override bool DrawTheme( ref UIElementDrawParams drawParams )
{

	return XPThemes.Button.DrawPushButton(ref drawParams, 
										     this.Rect, 
										     drawParams.InvalidRect, 
										     UIElementButtonState.Inactive,false);

}

Requirements

Target Platforms: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Server 2012, Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2