LRESULT     CALLBACK    DlgProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    HDC  hdc = ::GetDC(hWnd);
    switch(message)
    {

    case WM_COMMAND:
        {
            UINT wID = LOWORD(wParam);
            UINT wDWORD = HIWORD(wParam);

            if (wID == IDOK || wID == IDCANCEL)
            {
                EndDialog(hWnd, LOWORD(wParam));
                return TRUE;
            }

            if(wID == IDC_EDIT_NAME)
            {
                
                if(wDWORD == EN_UPDATE )
                {

                    //我想在这里限定在EDIT控件输入一定的字符和数字   应该怎么限定
                }
            }

        }
        break;
    }

    return 0;
}
LRESULT     CALLBACK    WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{

    switch (message)
    {
        
    case WM_COMMAND:
        {
            UINT wID = LOWORD(wParam);            

            if(wID == IDC_MENU_INPUT)
            {
                DialogBox(hInst, (LPCTSTR)IDD_DIALOG, hWnd, (DLGPROC)DlgProc);
            }


        }
        break;
    case WM_DESTROY:
        ::PostQuitMessage(0);
        break;
    default:
        return DefWindowProc(hWnd, message, wParam, lParam);
    }

    return 0;
}

怎么大家没个帮解决 ？  是不是太容易了不想回答？   这个是在SKD下 在COMMAND中响应Dialog， Dialog中有Edit控件

MFC: 创建一个自己的edit控件类, 派生自CEdit, 重载OnChar()函数, 在里面进行过滤处理
non-MFC: 自己写个控件, 处理WM_CHAR消息

[[it] 本帖最后由 Arcticanimal 于 2008-7-6 22:54 编辑 [/it]]

char *p=GetWindowText()
n=strlen(p)
if(n>12)
SetWindowText(hwnd,"")
..................

[[it] 本帖最后由 missiyou 于 2008-7-8 18:06 编辑 [/it]]