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Send message to window

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  • C capint

    I want to send a key to a window. I used Global Hook and my code is like this : //In hook proc : if(nCode <0) CallNextHookEx(MyHook,nCode,wParam,lParam); hWndApp = CWnd::FindWindow(0,_T("Test")); if (hWndApp == NULL) MessageBox(NULL,L" Can't find the window", L"",0); hWndApp->SendMessage(WM_CHAR, 8, 0); //Backspace It can find the window but it can't send the message. Some one plz help me :rose:

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    ThatsAlok
    wrote on last edited by
    #4

    see SendInput api of any use??

    "Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow
    Never mind - my own stupidity is the source of every "problem" - Mixture

    cheers, Alok Gupta VC Forum Q&A :- I/IV Support CRY- Child Relief and You/xml>

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    • C capint

      I want to send a key to a window. I used Global Hook and my code is like this : //In hook proc : if(nCode <0) CallNextHookEx(MyHook,nCode,wParam,lParam); hWndApp = CWnd::FindWindow(0,_T("Test")); if (hWndApp == NULL) MessageBox(NULL,L" Can't find the window", L"",0); hWndApp->SendMessage(WM_CHAR, 8, 0); //Backspace It can find the window but it can't send the message. Some one plz help me :rose:

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      David Crow
      wrote on last edited by
      #5

      If the target window is active, you can use SendInput().

      "Love people and use things, not love things and use people." - Unknown

      "To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

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      • S sudhir_Kumar

        I think you should should send: WM_KEYDOWN WM_CHAR WM_KEYUP

        -@SuDhIrKuMaR@-

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        capint
        wrote on last edited by
        #6

        What do you mean ? Do I have to send three messages at one time ?

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        • D David Crow

          If the target window is active, you can use SendInput().

          "Love people and use things, not love things and use people." - Unknown

          "To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

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          capint
          wrote on last edited by
          #7

          Could you show me an example of using SendInput to send a key to an active window plz ? I find it difficult to find a specific example :(

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          • C capint

            Could you show me an example of using SendInput to send a key to an active window plz ? I find it difficult to find a specific example :(

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            David Crow
            wrote on last edited by
            #8

            I found this using Google.

            "Love people and use things, not love things and use people." - Unknown

            "To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

            C T 2 Replies Last reply
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            • D David Crow

              I found this using Google.

              "Love people and use things, not love things and use people." - Unknown

              "To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

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              capint
              wrote on last edited by
              #9

              Thank you very much :D

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              • D David Crow

                I found this using Google.

                "Love people and use things, not love things and use people." - Unknown

                "To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

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                ThatsAlok
                wrote on last edited by
                #10

                DavidCrow wrote:

                I found this using Google.

                he he he Answer of yahoo getting very popular

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                • D David Crow

                  If the target window is active, you can use SendInput().

                  "Love people and use things, not love things and use people." - Unknown

                  "To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

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                  capint
                  wrote on last edited by
                  #11

                  Plz help me one more time. I would like to know how to send WM_KEYUP by SendInput. When I send a key, it seems to be pressed forever ...

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                  • C capint

                    Plz help me one more time. I would like to know how to send WM_KEYUP by SendInput. When I send a key, it seems to be pressed forever ...

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                    David Crow
                    wrote on last edited by
                    #12

                    See here.

                    "Love people and use things, not love things and use people." - Unknown

                    "To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

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                    • D David Crow

                      See here.

                      "Love people and use things, not love things and use people." - Unknown

                      "To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

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                      capint
                      wrote on last edited by
                      #13

                      I've read many pages from the pages you gave me but I still can't find the answer :( They recommend to use SendMessage but it doesn't work with SendMessage...

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                      • C capint

                        I've read many pages from the pages you gave me but I still can't find the answer :( They recommend to use SendMessage but it doesn't work with SendMessage...

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                        David Crow
                        wrote on last edited by
                        #14

                        Is the problem with sending or receiving? What does your code look like?

                        "Love people and use things, not love things and use people." - Unknown

                        "To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

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                        • D David Crow

                          Is the problem with sending or receiving? What does your code look like?

                          "Love people and use things, not love things and use people." - Unknown

                          "To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

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                          capint
                          wrote on last edited by
                          #15

                          This is my code :

                          HWND windowHandle = ::FindWindow(0, _T("Test"));
                          INPUT *key;
                          ::SetForegroundWindow(windowHandle);
                          key = new INPUT;
                          key->type = INPUT_KEYBOARD;
                          key->ki.wVk = VK_CONTROL;
                          key->ki.dwFlags = 0;
                          key->ki.time = 0;
                          key->ki.wScan = 0;
                          key->ki.dwExtraInfo = 0;
                          SendInput(1,key,sizeof(INPUT));
                          key->ki.dwExtraInfo = KEYEVENTF_KEYUP;
                          SendInput(1,key,sizeof(INPUT));

                          ::SendMessage(windowHandle,WM_KEYUP,0,0); //==> No effect ?

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                          • C capint

                            This is my code :

                            HWND windowHandle = ::FindWindow(0, _T("Test"));
                            INPUT *key;
                            ::SetForegroundWindow(windowHandle);
                            key = new INPUT;
                            key->type = INPUT_KEYBOARD;
                            key->ki.wVk = VK_CONTROL;
                            key->ki.dwFlags = 0;
                            key->ki.time = 0;
                            key->ki.wScan = 0;
                            key->ki.dwExtraInfo = 0;
                            SendInput(1,key,sizeof(INPUT));
                            key->ki.dwExtraInfo = KEYEVENTF_KEYUP;
                            SendInput(1,key,sizeof(INPUT));

                            ::SendMessage(windowHandle,WM_KEYUP,0,0); //==> No effect ?

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                            David Crow
                            wrote on last edited by
                            #16

                            capint wrote:

                            ::SendMessage(windowHandle,WM_KEYUP,0,0); //==> No effect ?

                            What does SendMessage() return?

                            "Love people and use things, not love things and use people." - Unknown

                            "To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

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