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09.14.2003 at 02:24AM PDT, ID: 20738161
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9.0

Detecting "show desktop" event

Asked by fl0yd in Windows Programming

Tags: , , ,

I'm currently working on a dialog based win32 application. Everything works fine so far except for one issue that I have been looking for a solution forever: How can an application find out about a "show desktop" shell command being invoked by either clicking on the "Show Desktop" icon in the quick launch bar or by pressing [win]+[d]/[win]+[m] shortcuts?

There doesn't appear to be a designated windows message, but rather a number of WM_MOVE/WM_SIZE/etc. messages are sent to all top-level windows. I don't have any problems handling the WM_SIZE message with wParam == SC_MINIMIZE and move the application to the system tray. However, when trying to restore the window it just won't show. I know that it's restored, since I can invoke the system menu by pressing [alt]+[space].

What I'm looking for is either a link to the sequence of messages that are sent by Windows, hints that may point me in the right direction (maybe it's just a dialog-based application problem?), a (possibly hacky) solution to the problem (other than setting the application's parent to the desktop window), or just about any information on the topic. I'm starting this question at 300 points, but I'm willing to spend more, seeing that this question pops up quite frequently without ever being fully answered.

Hope some of you have found a solution since I'm pretty much running out of ideas at this point.

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[+][-]09.14.2003 at 02:39AM PDT, ID: 9356325

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About this solution

Zone: Windows Programming
Tags: desktop, wm_size, sc_minimize, show
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Solution Provided By: DanRollins
Participating Experts: 2
Solution Grade: A
 
 
[+][-]09.14.2003 at 03:01AM PDT, ID: 9356345

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[+][-]09.14.2003 at 03:02AM PDT, ID: 9356347

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[+][-]09.14.2003 at 03:08AM PDT, ID: 9356357

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[+][-]09.14.2003 at 03:26PM PDT, ID: 9358958

At Experts Exchange, members can ask their questions to thousands of technology professionals, also known as Experts. Experts compete and collaborate to answer those questions by leaving comments like this one.

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