LEADTOOLS WinRT (Leadtools.Annotations.Automation)
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public event EventHandler<AnnDrawDesignerEventArgs> Draw
add_Draw(function(sender, e)) remove_Draw(function(sender, e))
The event handler receives an argument of type AnnDrawDesignerEventArgs containing data related to this event. The following AnnDrawDesignerEventArgs properties provide information specific to this event.
| Property | Description |
|---|---|
| Cancel | Gets or sets a value indicating whether the draw operation should be canceled. |
| Object | Gets the Leadtools.Annotations.Core.AnnObject that is being drawn. |
| OperationStatus | Gets the status of the draw operation. |
When an object is being drawn, the automation object will hook the object draw designer's AnnDrawDesigner.Draw to this event. Therefore, instead of hooking and unhooking to the various designers draw events, you can simply subscribe to this event once.
This example will show how to stop drawing new line objects.
Start with the AnnAutomationManager example, remove all the code inside the example function (search for the // TODO: add example code here comment) and insert the following code:
Click the example button then try to draw a line object.
Target Platforms: 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