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Getting active application by mouse click

Posted on 2006-11-28
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Last Modified: 2010-04-23
Ok, how about this.....is there a way to capture the application by way of a mouse click event?

So when a user clicks on a application (say Notepad) and then clicks on a button in a Vb.net 2003 program which will display what application they selected.  

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Question by:TechMonster
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Expert Comment

by:Hillwaaa
ID: 18033032
Hi TechMonster,

What are you trying to acheive?  There are ways to get references to other applications like Notepad, using functions from the win32 api, however they are pretty tricky to use...

Cheers,
Hillwaaa
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Expert Comment

by:Mike Tomlinson
ID: 18034177
Take a look at my approach here:
http://www.experts-exchange.com/Programming/Programming_Languages/Visual_Basic/VB_Controls/Q_21567355.html#14929000

It allows you to initiate a drag from your app and it identifies the hWnd of the control where the drop is made.  Then you can figure out the window that owns that control from there.

This is accomplished via the SetCapture() API.

If you think this is workable then I can see about converting the code to VB.Net.  It will be shorter than the solution VB6 since some of that code required APIs that are now encapsulated by the .Net framework.
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Author Comment

by:TechMonster
ID: 18038299
The setCapture may work.  I am not 100% sure i understand how to use but it may be heading me in the right direction.
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LVL 86

Expert Comment

by:Mike Tomlinson
ID: 18038316
I'll work out a sample project to demonstrate it...
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Mike Tomlinson earned 2000 total points
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