help with creating window

This is a discussion on help with creating window within the Windows Programming forums, part of the Platform Specific Boards category; Code: #include <windows.h> #define WndClsname[] "Justin's window class" LRESULT CALLBACK WndProcedure( HWND hwnd, UNIT msg, WPARAM wParam, LPARAM lParam); INT ...

  1. #1
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    help with creating window

    Code:
    #include <windows.h>
    
    #define WndClsname[] "Justin's window class"
    
    
    LRESULT CALLBACK WndProcedure( HWND hwnd, UNIT msg, WPARAM wParam, LPARAM lParam);
    
    
    
    
    INT WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,
                       LPSTR lpCmdLine, int nCmdShow )
    {
      HWND hwnd;
      WNDCLASSEX wc;
      MSG msg;
      
      wc.cbSize      = sizeof(WNDCLASSEX);
      wc.style       = CS_VREDRAW|CS_HREDRAW;
      wc.lpfnWndProc = WndProcedure;
      wc.cbClsExtra    = 0;
      wc.cbWndExtra    = 0;
      wc.hInstance     = hInstance;
      wc.hIcon         = LoadIcon(NULL, IDI_APPLICATION);
      wc.hCursor       = LoadCursor(NULL, IDC_ARROW);
      wc.hbrBackground = (HBRUSH)GetStockObject(BLACK_BRUSH);
      wc.lpszMenuName  = NULL;
      wc.lpszClassName = WndClsname;
      wc.hIconSm       = LoadIcon(NULL, IDI_APPLICATION);
      
      if(!RegisterClassEx(&wc))
        {
            MessageBox(NULL, "Window Registration Failed!", "Error!",
                MB_ICONEXCLAMATION | MB_OK);
            return 0;
        }
    
       hwnd = CreateWindowEx
       (WS_EX_CLIENTEDGE,
        WndClsname,
        "The title of the window",
        WS_OVERLAPPEDWINDOW,
        CW_USEDEFAULT,
        CW_USEDEFAULT,
        320,120,
        NULL,NULL,hInstance, NULL
        );
        if(hwnd == NULL)
        {
            MessageBox(NULL, "Window Creation Failed!", "Error!",
                MB_ICONEXCLAMATION | MB_OK);
            return 0;
        }
    
        ShowWindow(hwnd, nCmdShow);
        UpdateWindow(hwnd);
    
    
        while(GetMessage(&msg, NULL, 0, 0) > 0)
        {
            TranslateMessage(&msg);
            DispatchMessage(&msg);
        }
       return msg.wParam;
    
    }
    
    LRESULT CALLBACK WndProcedure( HWND hwnd, UNIT msg, WPARAM wParam, LPARAM lParam)
    {
            switch(msg)
            {
             case WM_CLOSE:
                DestroyWindow(hwnd);
            break;
            case WM_DESTROY:
                PostQuitMessage(0);
            break;
            default:
                     return DefWindowProc(hwnd, msg, wParam, lParam);
                     break;
             }
    return 0;
    }
    i get errors concerning UNIT is undeclared,
    invalid conversion from `LRESULT (*)(HWND__*, int, WPARAM, LPARAM)' to `LRESULT (*)(HWND__*, UINT, WPARAM, LPARAM)', and
    expected primary-expression before ']' token

  2. #2
    Woof, woof! zacs7's Avatar
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    You mean UINT not UNIT,

    Keep your Window class name simple, and avoid spaces, also you're not allowed special characters in macros

    Code:
    #define WND_CLASS_NAME "JUSTINS_WC"
    
    wc.lpszClassName = WND_CLASS_NAME;
    
    /* ... */
    
      hwnd = CreateWindowEx
       (WS_EX_CLIENTEDGE,
        WND_CLASS_NAME,
    /* ... */

  3. #3
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    Hey, thanks for helping me for my syntax error and i'll stray from using special characters in macros xD

  4. #4
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    hey i have another problem

    im using resource file to make a new cursor...
    i used icon suite program for the visual editor, and script the rc file
    in bloodshed(latest ver)

    Code:
    #include "resource.h"
    
    IDC_REDCUR  CURSOR "Red.cur"
    This is the .rc script and the
    header i just type in #define IDC_REDCUR 104 .

    for the program i just modtify it with
    wc.hCursor = LoadCursor(hInstance, MAKEINTRESOURCE(IDC_REDCUR));
    and the image is 16x16 256 color ...

  5. #5
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    the problem is that it doesn't show the custom cursor and instead the default one

  6. #6
    Malum in se abachler's Avatar
    Join Date
    Apr 2007
    Posts
    3,189
    Quote Originally Posted by zacs7 View Post
    You mean UINT not UNIT,
    yes, the imfamous UNIT bug, i just made this one myself not 5 minutes ago :|

    try this instead:
    Code:
    wc.hCursor = LoadCursor(hInstance, TEXT ("IDC_REDCUR"));
    Last edited by abachler; 06-12-2007 at 05:48 PM.
    Until you can build a working general purpose reprogrammable computer out of basic components from radio shack, you are not fit to call yourself a programmer in my presence. This is cwhizard, signing off.

  7. #7
    Registered User
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    oooh i found the problem

    it's weird but it saids
    [Resource error] cursor file `Red.cur' does not contain cursor data
    xD
    well this is the problem but the file i use i made with an external visual editor

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