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POWin32 Window Styles Overlap Issue
 

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    <p>I have two listboxes windows created by:</p> <pre><code>_objectList = CreateWindow("LISTBOX", NULL, WS_CHILD | WS_VISIBLE | LBS_STANDARD | LBS_SORT, 5, 50, 10, 50, _windowParent, NULL, _windowInstance, 0); _resourceList = CreateWindow("LISTBOX", NULL, WS_CHILD | WS_VISIBLE | LBS_STANDARD | LBS_SORT, 5, 50, 10, 50, _windowParent, NULL, _windowInstance, 0); ShowWindow(_objectList, 1); ShowWindow(_resourceList, 0); </code></pre> <p>They're positioned inside a TabControl box, and when I click a tab, I want to show one/hide the other. I'm doing this with:</p> <pre><code>//In the message proc function if(uMsg == WM_NOTIFY) { if(((LPNMHDR)lParam)-&gt;code == TCN_SELCHANGE) { if(((LPNMHDR)lParam)-&gt;hwndFrom == _tabControl.GetWindowHandle()) { int index = SendMessage(_tabControl.GetWindowHandle(), TCM_GETCURSEL, 0, 0); _tabControl.showTab(index); //this function will call the ShowWindow(); to show only the tab I'd like to display } } } </code></pre> <p>This is how the listbox looks when I first run the code (the ObjectList to the right): <a href="http://img.photobucket.com/albums/v204/Shakazahn/ListboxOK_zpsee5c62b9.jpg" rel="nofollow noreferrer">Listbox Properly Showing http://img.photobucket.com/albums/v204/Shakazahn/ListboxOK_zpsee5c62b9.jpg</a></p> <p>This is when I click the tab: <a href="http://img.photobucket.com/albums/v204/Shakazahn/ListboxNotOK_zps5d05a019.jpg" rel="nofollow noreferrer">Listbox Got Ugly All of a Sudden http://img.photobucket.com/albums/v204/Shakazahn/ListboxNotOK_zps5d05a019.jpg</a></p> <p>And if I click to show the first Listbox, I also get: <a href="http://img.photobucket.com/albums/v204/Shakazahn/ListboxNotOK2_zpsc1dca19a.jpg" rel="nofollow noreferrer">First Listbox Got Infected as Well http://img.photobucket.com/albums/v204/Shakazahn/ListboxNotOK2_zpsc1dca19a.jpg</a></p> <p>I tried changing some of the window Styles but nothing worked, also, I don't have a clue why this is happening... any fixes for this?</p> <p><strong>edit</strong>: After some tests, I found out that this is happening because both Listboxes are children of the mainWindow, not the tabControl window. If I set the parentWindow of both to the tabControl, they display fine, but I was having issues with window grandchildren and lots of subclassing, so I'm making all windows children of my main window. How can I fix this display issue?</p>
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