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POCan't switch keyboard language while window is active
 

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  1. POCan't switch keyboard language while window is active
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    <p>I'm learning Win32 API. I've created an empty window and added an Edit box in it to type some text. I can type a text in it, but can't switch the keyboard language.</p> <p>Shortcuts like Alt+Shift don't work. If I click the language icon in the tray, it will pause for a few seconds, then it will open the list finally, but my window will become inactive, so the change won't affect it.</p> <p>I can make the language change happen if I do this:</p> <ol> <li>press Alt+Shift (or whatever the combination is)</li> <li>press Alt, Space</li> </ol> <p>Step 2 will result, as usual, in the popping of the window menu at the left top, but simultaneously the step 1 will become actual too.</p> <p>I guess, I'm not processing some kind of message, or creating the window wrong, but I can't find what is it that is wrong. Here is the full code:</p> <pre><code>#include &lt;windows.h&gt; // handle of the edit box HWND testEditBox; // shows a message void showMessage( LPSTR message ){ MessageBox( GetActiveWindow(), message, "", MB_OK ); } // a simple window procedure LRESULT CALLBACK windowProc( HWND window, UINT message, WPARAM wparam, LPARAM lparam ) { switch( message ) { case WM_CLOSE: DestroyWindow( window ); break; case WM_DESTROY: PostQuitMessage( 0 ); break; default: return DefWindowProc( window, message, wparam, lparam ); } return 0; } int WINAPI WinMain( HINSTANCE instance, HINSTANCE prevInstance, LPSTR commandLine, int showMode ) { // create window class WNDCLASS windowClass; windowClass.cbClsExtra = 0; windowClass.cbWndExtra = 0; windowClass.style = 0; windowClass.hInstance = instance; windowClass.hCursor = LoadCursor( NULL, IDC_ARROW ); windowClass.hbrBackground = (HBRUSH)(COLOR_BTNFACE + 1); windowClass.hIcon = LoadIcon( NULL, IDI_APPLICATION ); windowClass.lpszClassName = "testWindow"; windowClass.lpfnWndProc = windowProc; if( !RegisterClass( &amp;windowClass ) ) { showMessage( "Some trouble, sir" ); return GetLastError(); } HWND window = CreateWindow ( "testWindow", "Test Window", WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT, 400, 300, NULL, // no parent NULL, // no menu instance, NULL // no 'window-creation data' ); if( !window ){ showMessage( "Some trouble, sir" ); return GetLastError(); } ShowWindow( window, showMode ); // add an EDIT box to our window testEditBox = CreateWindow ( "EDIT", "input here", WS_CHILD, 10, 10, 200, 20, window, NULL, instance, NULL ); ShowWindow( testEditBox, SW_SHOW ); // start message loop MSG message; while( GetMessage( &amp;message, window, 0, 0 ) &gt; 0 ) { TranslateMessage( &amp;message ); DispatchMessage( &amp;message ); } return message.wParam; } </code></pre>
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    1. USGas Welder
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    1. COWhich OS is this, by the way? I'm about to test on Windows 7.
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    2. COI tested it on XP, two different machines.
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    3. COSeems to work for me going from my normal input language to another, but I can't go back again without manually switching it, which has always been the case.
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      1. POCan't switch keyboard language while window is active
      1. USchris
 

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