Problem with text field.

This is a discussion on Problem with text field. within the Windows Programming forums, part of the Platform Specific Boards category; How do I change my code so that after typing in the text field, when I press enter, it has ...

  1. #1
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    Question Problem with text field.

    How do I change my code so that after typing in the text field, when I press enter, it has the same effect as pressing the "Translate!" button.

    Code:
    #include <windows.h>
    #include <stdio.h>
    #include <stdlib.h>
    #include <ctype.h>
    #include <time.h>
    #define compare(a1,b1) !stricmp(a1,b1)
    #define ID_OF_BUTTON 1101
    #define ID_MYEDIT 3460 
    const char g_szClassName[] = "myWindowClass";
    
    HWND hWndMyEdit;
    
    int doSwilly(char *buf)
    {
     // this what happens when you click translate
     return 0;
    }
    
    // Step 4: the Window Procedure
    LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
    {
        char buf[500];
    
        switch(msg)
        {
            case WM_CLOSE:
                  DeleteFile("temp.t");
                DestroyWindow(hwnd);
            break;
            case WM_DESTROY:
             DeleteFile("temp.t");
                PostQuitMessage(0);
            break;
            case WM_COMMAND: 
            switch(LOWORD(wParam))
            {
            case ID_OF_BUTTON:
            GetWindowText(hWndMyEdit, buf, 500);
            doSwilly(buf);
            break;
            }
            break;
            default:
                return DefWindowProc(hwnd, msg, wParam, lParam);
        }
        return 0;
    }
    
    int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,
        LPSTR lpCmdLine, int nCmdShow)
    {
        WNDCLASSEX wc;
        HWND hwnd;
        MSG Msg;
        //Step 1: Registering the Window Class
        wc.cbSize        = sizeof(WNDCLASSEX);
        wc.style         = 0;
        wc.lpfnWndProc   = WndProc;
        wc.cbClsExtra    = 0;
        wc.cbWndExtra    = 0;
        wc.hInstance     = hInstance;
        wc.hIcon         = LoadIcon(NULL, IDI_APPLICATION);
        wc.hCursor       = LoadCursor(NULL, IDC_ARROW);
        wc.hbrBackground = (HBRUSH)(COLOR_WINDOW);
        wc.lpszMenuName  = NULL;
        wc.lpszClassName = g_szClassName;
        wc.hIconSm       = LoadIcon(NULL, IDI_APPLICATION);
        srand(time(NULL));
        if(!RegisterClassEx(&wc))
        {
            MessageBox(NULL, "Window Registration Failed!", "Error!",
                MB_ICONEXCLAMATION | MB_OK);
            return 0;
        }
    
        // Step 2: Creating the Window
        hwnd = CreateWindowEx(
            WS_EX_CLIENTEDGE,
            g_szClassName,
            "Swilly translator, version 2.",
            WS_SYSMENU,
            CW_USEDEFAULT, CW_USEDEFAULT, 580, 50,
            NULL, NULL, hInstance, NULL);
            hWndMyEdit = CreateWindow("EDIT",
                          "", WS_CHILD | WS_VISIBLE,
                          0, 0, 489,20, hwnd,
                          (HMENU) ID_MYEDIT,
                          hInstance, NULL);
    
        CreateWindow(
         "button",
         "Translate!",
         WS_CHILD | WS_VISIBLE,
         489, 0,
         80, 20,
         hwnd,
         (HMENU)ID_OF_BUTTON,
         0,
         NULL
        );
    
    
        if(hwnd == NULL)
        {
            MessageBox(NULL, "Window Creation Failed!", "Error!",
                MB_ICONEXCLAMATION | MB_OK);
            return 0;
        }
    
        ShowWindow(hwnd, nCmdShow);
        UpdateWindow(hwnd);
    
        // Step 3: The Message Loop
        while(GetMessage(&Msg, NULL, 0, 0) > 0)
        {
            TranslateMessage(&Msg);
            DispatchMessage(&Msg);
        }
        return Msg.wParam;
    }

  2. #2
    &TH of undefined behavior Fordy's Avatar
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    Add this to your windows procedure;

    Code:
    case WM_KEYDOWN:
    	if((int) wParam == VK_RETURN){
    	GetWindowText(hWndMyEdit, buf, 500);
    	doSwilly(buf);
    	}
    	else return DefWindowProc(hwnd, msg, wParam, lParam);
    	break;

  3. #3
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    That works, cheers

    Oh, actually it doesn't

    Damn my premptive posting.

    It works as long as the text field aint selected
    Last edited by Brian; 03-13-2002 at 11:15 AM.

  4. #4
    &TH of undefined behavior Fordy's Avatar
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    Whoa....I see...when you are typing the focus is on the edit so it wont work....give me a minute

  5. #5
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    ...and maybe you could tell me how I make it so the text field is automatically in focus? please?

  6. #6
    &TH of undefined behavior Fordy's Avatar
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    I guess the easyies way would be to subclass the edit window......


    I dont think standard controls send parent notifications...


    I have something I have to do right now, but if nobody has answered before I get back I will look at it again...sorry..

  7. #7
    &TH of undefined behavior Fordy's Avatar
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    Sorry for the delay mate...had to go online to do my weekly shop or I'd be eating carrots all damn week


    Code:
    #include <windows.h>
    #include <stdio.h>
    #include <stdlib.h>
    #include <ctype.h>
    #include <time.h>
    #define compare(a1,b1) !stricmp(a1,b1)
    #define ID_OF_BUTTON 1101
    #define ID_MYEDIT 3460
    const char g_szClassName[] = "myWindowClass";
    
    HWND hWndMyEdit;
    WNDPROC MainWindProc;
    
    
    int doSwilly(char *buf)
    {
     // this what happens when you click translate
    	MessageBox(0,"","",MB_OK);
     return 0;
    }
    
    LRESULT CALLBACK EditProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
    {
    	
    	char buf[500];
    	switch(msg){
    		case WM_CHAR:
    			if((int) wParam == VK_RETURN){
    				GetWindowText(hwnd, buf, 500);
    				doSwilly(buf);
    				break;
    			}
    			else return CallWindowProc(MainWindProc,hwnd, msg, wParam, lParam);
    			break;
    	}
    	return CallWindowProc(MainWindProc,hwnd, msg, wParam, lParam);
    }
    
    
    // Step 4: the Window Procedure
    LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
    {
        char buf[500];
    
        switch(msg)
        {
    		case WM_KEYDOWN:
    			if((int) wParam == VK_RETURN){
    				GetWindowText(hWndMyEdit, buf, 500);
    				doSwilly(buf);
    				break;
    			}
    			else return DefWindowProc(hwnd, msg, wParam, lParam);
    			break;
            case WM_CLOSE:
                  DeleteFile("temp.t");
                DestroyWindow(hwnd);
            break;
            case WM_DESTROY:
             DeleteFile("temp.t");
                PostQuitMessage(0);
            break;
            case WM_COMMAND:
            switch(LOWORD(wParam))
            {
            case ID_OF_BUTTON:
            GetWindowText(hWndMyEdit, buf, 500);
            doSwilly(buf);
            break;
            }
            break;
            default:
                return DefWindowProc(hwnd, msg, wParam, lParam);
        }
        return 0;
    }
    
    int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,
        LPSTR lpCmdLine, int nCmdShow)
    {
        WNDCLASSEX wc;
        HWND hwnd;
        MSG Msg;
        //Step 1: Registering the Window Class
        wc.cbSize        = sizeof(WNDCLASSEX);
        wc.style         = 0;
        wc.lpfnWndProc   = WndProc;
        wc.cbClsExtra    = 0;
        wc.cbWndExtra    = 0;
        wc.hInstance     = hInstance;
        wc.hIcon         = LoadIcon(NULL, IDI_APPLICATION);
        wc.hCursor       = LoadCursor(NULL, IDC_ARROW);
        wc.hbrBackground = (HBRUSH)(COLOR_WINDOW);
        wc.lpszMenuName  = NULL;
        wc.lpszClassName = g_szClassName;
        wc.hIconSm       = LoadIcon(NULL, IDI_APPLICATION);
        srand(time(NULL));
        if(!RegisterClassEx(&wc))
        {
            MessageBox(NULL, "Window Registration Failed!", "Error!",
                MB_ICONEXCLAMATION | MB_OK);
            return 0;
        }
    
        // Step 2: Creating the Window
        hwnd = CreateWindowEx(
            WS_EX_CLIENTEDGE,
            g_szClassName,
            "Swilly translator, version 2.",
            WS_SYSMENU,
            CW_USEDEFAULT, CW_USEDEFAULT, 580, 50,
            NULL, NULL, hInstance, NULL);
            
    	hWndMyEdit = CreateWindow("EDIT",
                          "", WS_CHILD | WS_VISIBLE,
                          0, 0, 489,20, hwnd,
                          (HMENU) ID_MYEDIT,
                          hInstance, NULL);
    
        CreateWindow(
         "button",
         "Translate!",
         WS_CHILD | WS_VISIBLE ,
         489, 0,
         80, 20,
         hwnd,
         (HMENU)ID_OF_BUTTON,
         0,
         NULL
        );
    
    	MainWindProc =  (WNDPROC)SetWindowLong(hWndMyEdit,GWL_WNDPROC,(DWORD)EditProc);
    
        if(hwnd == NULL)
        {
            MessageBox(NULL, "Window Creation Failed!", "Error!",
                MB_ICONEXCLAMATION | MB_OK);
            return 0;
        }
    
        ShowWindow(hwnd, nCmdShow);
        UpdateWindow(hwnd);
    
        // Step 3: The Message Loop
        while(GetMessage(&Msg, NULL, 0, 0) > 0)
        {
            TranslateMessage(&Msg);
            DispatchMessage(&Msg);
        }
        return Msg.wParam;
    }
    I have used SetWindowLong to sublass your edit box and filter out all of the enter key presses........have a go and see if its ok for you

  8. #8
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    Thanks very much, that does work.


    Now how can I make it automatically focus the text field when the program starts?

  9. #9
    &TH of undefined behavior Fordy's Avatar
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    Code:
    LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
    {
        char buf[500];
    
    
        switch(msg)
        {
    		
                        case WM_ACTIVATE:
    			SetFocus(hWndMyEdit);
    			break;
    		case WM_KEYDOWN:
    			if((int) wParam == VK_RETURN){
    				GetWindowText(hWndMyEdit, buf, 500);
    				doSwilly(buf);
    				break;
    			}
    			else return DefWindowProc(hwnd, msg, wParam, lParam);
    			break;
            case WM_CLOSE:
                  DeleteFile("temp.t");
                DestroyWindow(hwnd);
            break;
            case WM_DESTROY:
             DeleteFile("temp.t");
                PostQuitMessage(0);
            break;
            case WM_COMMAND:
            switch(LOWORD(wParam))
            {
            case ID_OF_BUTTON:
            GetWindowText(hWndMyEdit, buf, 500);
            doSwilly(buf);
            break;
            }
            break;
            default:
                return DefWindowProc(hwnd, msg, wParam, lParam);
        }
        return 0;
    }

  10. #10
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    Thanks again, you've been a great help.

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