PostKeybdMessage
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From: Robert Barreiro on 5 May 2010 14:54 Hi everyone! I'm developing a custom control for Windows Mobile which mimics the SIP built-in keyboard, basically it's the same, but the difference is that I need to be able to move it, displaying the keyboard on the bottom of the screen, top, etc. I'm using the PostKeybdMessage function to send the user selected key to the active window, that's simple. But I have a problem: I can't send the arrows keys (up, down, right, left). The codes are: - Up: 38 - Down: 40 - Left: 37 - Right: 39 But these are the same codes for other characters, so when I'm sending that codes I get the character representation (38=& - 39=( - 37=% - 39='). The question is, what I'm doing wrong? Do I have to send another code too? The code snippet I'm using for the SendKey function is something like this: private void SendKey(byte key) { uint KeyStateDownFlag = 0x0080; uint KeyShiftDeadFlag = 0x20000; uint[] buf1 = new uint[1]; uint[] DownStates = new uint[1]; DownStates[0]=KeyStateDownFlag; buf1[0]=(uint)key; uint[] DeadStates = {KeyShiftDeadFlag}; int hwnd = -1; PostKeybdMessage(hwnd, 0, KeyStateDownFlag, (uint)buf1.Length, DownStates, buf1); } I really appreciate your help, I'm kind of stuck with this :( Regards, Robert Barreiro.
From: Paul G. Tobey [eMVP] paultobey _at_ earthlink _dot_ on 6 May 2010 11:09 You're doing it wrong. You're trying to send the *characters* 38, 39, etc. Those are not characters (the arrows); they are *keys*. You can send the virtual *key codes* for them, but if you try to send those values as characters, as you see, you'll get something else. Use keybd_event(), *not* PostKeybdMessage(), to send *keys* (Control, Alt, Function, etc.) Paul T. "Robert Barreiro" wrote: > Hi everyone! > > I'm developing a custom control for Windows Mobile which mimics the SIP > built-in keyboard, basically it's the same, but the difference is that I > need to be able to move it, displaying the keyboard on the bottom of the > screen, top, etc. > > I'm using the PostKeybdMessage function to send the user selected key to the > active window, that's simple. But I have a problem: I can't send the arrows > keys (up, down, right, left). The codes are: > > - Up: 38 > - Down: 40 > - Left: 37 > - Right: 39 > > But these are the same codes for other characters, so when I'm sending that > codes I get the character representation (38=& - 39=( - 37=% - 39='). The > question is, what I'm doing wrong? Do I have to send another code too? > > The code snippet I'm using for the SendKey function is something like this: > > private void SendKey(byte key) { > > uint KeyStateDownFlag = 0x0080; > uint KeyShiftDeadFlag = 0x20000; > uint[] buf1 = new uint[1]; > uint[] DownStates = new uint[1]; > DownStates[0]=KeyStateDownFlag; > buf1[0]=(uint)key; > > uint[] DeadStates = {KeyShiftDeadFlag}; > > int hwnd = -1; > > PostKeybdMessage(hwnd, 0, KeyStateDownFlag, (uint)buf1.Length, > DownStates, buf1); > } > > I really appreciate your help, I'm kind of stuck with this :( > > > Regards, > > > > Robert Barreiro. > > > > > > >
From: Arun on 31 May 2010 13:24
On May 6, 8:09 am, Paul G. Tobey [eMVP] <paultobey _at_ earthlink _dot_ net> wrote: > You're doing it wrong. You're trying to send the *characters* 38, 39, etc. > Those are not characters (the arrows); they are *keys*. You can send the > virtual *key codes* for them, but if you try to send those values as > characters, as you see, you'll get something else. > > Use keybd_event(), *not* PostKeybdMessage(), to send *keys* (Control, Alt, > Function, etc.) > > Paul T. > > > > "Robert Barreiro" wrote: > > Hi everyone! > > > I'm developing a custom control for Windows Mobile which mimics the SIP > > built-in keyboard, basically it's the same, but the difference is that I > > need to be able to move it, displaying the keyboard on the bottom of the > > screen, top, etc. > > > I'm using the PostKeybdMessage function to send the user selected key to the > > active window, that's simple. But I have a problem: I can't send the arrows > > keys (up, down, right, left). The codes are: > > > - Up: 38 > > - Down: 40 > > - Left: 37 > > - Right: 39 > > > But these are the same codes for other characters, so when I'm sending that > > codes I get the character representation (38=& - 39=( - 37=% - 39='). The > > question is, what I'm doing wrong? Do I have to send another code too? > > > The code snippet I'm using for the SendKey function is something like this: > > > private void SendKey(byte key) { > > > uint KeyStateDownFlag = 0x0080; > > uint KeyShiftDeadFlag = 0x20000; > > uint[] buf1 = new uint[1]; > > uint[] DownStates = new uint[1]; > > DownStates[0]=KeyStateDownFlag; > > buf1[0]=(uint)key; > > > uint[] DeadStates = {KeyShiftDeadFlag}; > > > int hwnd = -1; > > > PostKeybdMessage(hwnd, 0, KeyStateDownFlag, (uint)buf1.Length, > > DownStates, buf1); > > } > > > I really appreciate your help, I'm kind of stuck with this :( > > > Regards, > > > Robert Barreiro. Yes, use keybd_event() const byte KEYEVENTF_SILENT = 0x0004; keybd_event((byte)Keys.Down, 0, KEYEVENTF_SILENT, UIntPtr.Zero); keybd_event((byte)Keys.Up, 0, KEYEVENTF_SILENT, UIntPtr.Zero); [DllImport("coredll.dll", EntryPoint="keybd_event")] private static extern void keybd_event(byte bVk, byte bScan, uint dwFlags, UIntPtr dwExtraInfo); Hope this helps, Cheers, Arun Selvaraj |