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POHow do I get in C# an Aero like transparent window that can be clicked through
 

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  1. POHow do I get in C# an Aero like transparent window that can be clicked through
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    <p>What I want to do is to make an external application (process) go TopMost Aero like tranparent that can be clicked through. The problem is that I can get Aero to work or a TopMost click through window but not both. The commented part of the code (/*DwmApi... */) is the Aero code wich also removes the title bar of the process window and underneath is the code for the click through window ( I don't need alpha set if I have Aero on, here it is used for testing purposes).</p> <p>Here is a link that shows what Aero code does: <a href="http://ru11en.wordpress.com/category/mikumikudance/" rel="nofollow noreferrer">http://ru11en.wordpress.com/category/mikumikudance/</a> </p> <p>And here is a link for the clicking "through" code: <a href="https://stackoverflow.com/questions/1524035/topmost-form-clicking-through-possible">Topmost form, clicking &quot;through&quot; possible?</a></p> <p>Note that if I change GWL_STYLE=-17, the program doesn't remove the title bar anymore.</p> <p><pre> //GWL_STYLE=-16; GWL.ExStyle=-20; private void transparency_Click(object sender, EventArgs e) { ProcessItem selectedItem = (ProcessItem)this.comboBox1.SelectedItem; if (selectedItem != null) { IntPtr handle = selectedItem.Handle; if (handle != IntPtr.Zero) {</p> <code> /*DwmApi.DwmExtendIntoClientAll(handle); int num = GetWindowLong(handle, GWL_STYLE) &amp; ~WS_OVERLAPPEDWINDOW; SetWindowLong(handle, GWL_STYLE, num); SetWindowPos(handle, IntPtr.Zero, 0, 0, 0, 0, SWP__REFRESH); */ int wl = GetWindowLong(handle, GWL.ExStyle); original = wl; wl = wl | 0x80000 | 0x20; SetWindowPos(handle, HWND_TOPMOST, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE | SWP_SHOWWINDOW); SetWindowLong(handle, GWL.ExStyle, wl); SetLayeredWindowAttributes(handle, 0, 200, LWA.Alpha); } } } </code></pre>
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    1. COActually I can have both transparency and click through but I had to place the code in 2 separate buttons.
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