DOCUMENT:Q250276 25-OCT-2000 [winnt] TITLE :HOWTO: Do Right-to-Left and Left-to-Right Mirroring in Win2000 PRODUCT :Microsoft Windows NT PROD/VER:WINDOWS: OPER/SYS: KEYWORDS:_IK kbOSWin2000 kbGrpDSIntl kbDSupport ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Windows 2000 Advanced Server - Microsoft Windows 2000 Server - Microsoft Windows 2000 Professional - Microsoft Win32 Software Development Kit (SDK) ------------------------------------------------------------------------------- SUMMARY ======= On a Windows 2000-based computer, you can dynamically change the application user interface from left-to-right to right-to-left. MORE INFORMATION ================ This can be accomplished by using the following code: // Use ANSI versions of GetWindowLong() and SetWindowLong() because // Unicode is not needed for these calls. lExStyles = GetWindowLongA(hWnd, GWL_EXSTYLE) ; // Check whether new layout is opposite the current layout. if(!!(pLState->IsRTLLayout) != !!(lExStyles & WS_EX_LAYOUTRTL)) { // The following lines update the application layout to // be right-to-left or left-to-right, as appropriate. lExStyles ^= WS_EX_LAYOUTRTL ; // Toggle layout. SetWindowLongA(hWnd, GWL_EXSTYLE, lExStyles) ; // This is to update layout in the client area. InvalidateRect(hWnd, NULL, TRUE) ; } Additional query words: ====================================================================== Keywords : _IK kbOSWin2000 kbGrpDSIntl kbDSupport Technology : kbwin2000AdvServ kbwin2000AdvServSearch kbwin2000Serv kbwin2000ServSearch kbwin2000Search kbwin2000ProSearch kbwin2000Pro kbWin32SDKSearch kbAudDeveloper kbSDKSearch kbWinAdvServSearch kbWin32sSearch Version : WINDOWS: Issue type : kbhowto ============================================================================= THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. Copyright Microsoft Corporation 2000.