create custom tools

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create custom tools	Liu Yu	Mar 09, 2009
Re: create custom tools	Michael Knight	Mar 09, 2009

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Subject	create custom tools
Author	Liu Yu
Date	Mar 09, 2009
Message	hello，teachers，when i create my custom tools, i know it will pass an control object to the function named oncreate( object hook), i want to know how is works, i do not call this function and pass an control object,it confuse me , the book says,the hook can be MapControl、PageLayoutControl和ToolbarControl,i want to know when the form was seen,which control object pass to the hook specific,thank you!
	private IHookHelper m_HookHelper = new HookHelperClass(); public override void OnCreate(object hook) { m_HookHelper.Hook = hook; if(hook is IToolbarContronl) { to do something, can you explain this to me ? } }

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Subject	Re: create custom tools
Author	Michael Knight
Date	Mar 09, 2009
Message	You have to test the hook object to see what it is. For example //C# //From the developer help ublic override void OnCreate(object hook) { if (hook == null) return; m_application = hook as IApplication; //Disable if it is not ArcMap if (hook is IMxApplication) base.m_enabled = true; else base.m_enabled = false; // TODO: Add other initialization code }
	Michael Knight GIS Solutions Architect Contract Land Staff, LLC Stafford, Texas http://www.contractlandstaff.com