Combobox Problem, new Window, new Combobox
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Thread: Combobox Problem, new Window, new Combobox

  1. #1
    Join Date
    Nov 2012
    Posts
    2

    Combobox Problem, new Window, new Combobox

    Hello.
    I am trying to find a solution to my Problem. What i want is to create a Combobox, when i select a value, it has to open a new Pop up window.
    Problem is, that when i select it, the new Window pops up but there is a new combobox in the new window and the new combobox is also active.
    The first Combobox should always be active and also there shouldn't be another combobox in the new window. btw there will be a .bmp in the new window.

    Lets say when i click on "Item3" there should pop up a window, nothing else.
    But what happens is that there is a new Combobox and i have to choose a new Item from there, not from the main window. This is not what i want.
    here is the code:

    #include <windows.h>

    #define ID_LIST 1
    #define ID_TEXT 2
    HINSTANCE hChildInst = 0;


    LRESULT CALLBACK WindowProcedure (HWND, UINT, WPARAM, LPARAM);


    char szClassName[ ] = "ComboBox App";

    int WINAPI WinMain (HINSTANCE hThisInstance,
    HINSTANCE hPrevInstance,
    LPSTR lpszArgument,
    int nFunsterStil)

    {
    HWND hwnd;
    MSG messages;
    WNDCLASSEX wincl;
    WNDCLASSEX wincl2;


    wincl.hInstance = hThisInstance;
    wincl.lpszClassName = szClassName;
    wincl.lpfnWndProc = WindowProcedure;
    wincl.style = CS_DBLCLKS;
    wincl.cbSize = sizeof (WNDCLASSEX);


    wincl.hIcon = LoadIcon (NULL, IDI_APPLICATION);
    wincl.hIconSm = LoadIcon (NULL, IDI_APPLICATION);
    wincl.hCursor = LoadCursor (NULL, IDC_ARROW);
    wincl.lpszMenuName = NULL;
    wincl.cbClsExtra = 0;
    wincl.cbWndExtra = 0;

    wincl.hbrBackground = (HBRUSH) COLOR_BACKGROUND;


    if (!RegisterClassEx (&wincl))
    return 0;


    /* The Window structure */
    wincl2.hInstance = hChildInst;
    wincl2.lpszClassName = "Proc2";
    wincl2.lpfnWndProc = WindowProcedure;
    wincl2.style = CS_DBLCLKS;
    wincl2.cbSize = sizeof (WNDCLASSEX);

    /* Use default icon and mouse-pointer */
    wincl2.hIcon = LoadIcon (NULL, IDI_APPLICATION);
    wincl2.hIconSm = LoadIcon (NULL, IDI_APPLICATION);
    wincl2.hCursor = LoadCursor (NULL, IDC_ARROW);
    wincl2.lpszMenuName = NULL;
    wincl2.cbClsExtra = 0;
    wincl2.cbWndExtra = 0;

    wincl2.hbrBackground = (HBRUSH) COLOR_BACKGROUND;


    if (!RegisterClassEx (&wincl2))
    return 0;



    hwnd = CreateWindowEx (
    0,
    szClassName,
    "ComboBox App",
    WS_OVERLAPPEDWINDOW,
    CW_USEDEFAULT,
    CW_USEDEFAULT,
    544,
    375,
    HWND_DESKTOP,
    NULL,
    hThisInstance,
    NULL
    );


    ShowWindow (hwnd, nFunsterStil);


    while (GetMessage (&messages, NULL, 0, 0))
    {

    TranslateMessage(&messages);

    DispatchMessage(&messages);
    }


    return messages.wParam;
    }



    void FillListBox(HWND hwndList)
    {
    CHAR *pVarName[] = {"Item1", "Item2", "Item3", "Item4", "Item5"};

    for(int i=0; i<5; i++)

    SendMessage(hwndList, CB_ADDSTRING, 0, (LPARAM)pVarName[i]);

    }

    HWND hwndtest;


    LRESULT CALLBACK WindowProcedure (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
    {
    static HWND hwndList, hwndText, hwndComboWindow;
    int iIndex, iLength, cxChar, cyChar;
    CHAR pVarName[30];



    switch (message)
    {

    case WM_CREATE:

    cxChar = LOWORD(GetDialogBaseUnits());
    cyChar = HIWORD(GetDialogBaseUnits());

    //Create Display Window
    hwndText = CreateWindow(TEXT("static"),NULL, WS_CHILD | WS_VISIBLE |
    SS_LEFT, cxChar, cyChar,
    GetSystemMetrics(SM_CXSCREEN), cyChar,
    hwnd, (HMENU)ID_TEXT,
    (HINSTANCE)GetWindowLong(hwnd, GWL_HINSTANCE),
    NULL);

    //Create ComboBox
    hwndList = CreateWindow(TEXT("Combobox"), NULL, WS_CHILD | WS_VISIBLE |
    LBS_STANDARD, cxChar, cyChar*3,
    cxChar*16 + GetSystemMetrics(SM_CXVSCROLL),
    cyChar*5, hwnd, (HMENU)ID_LIST,
    (HINSTANCE)GetWindowLong(hwnd, GWL_HINSTANCE),
    NULL);




    //Populate ComboBox
    FillListBox(hwndList);

    //Set a Default Selection
    SendMessage(hwndList, CB_SETCURSEL, 0, 0);
    GetWindowText(hwndList, pVarName, 30);
    SetWindowText(hwndText, pVarName);

    return 0;

    case WM_COMMAND:

    if( LOWORD(wParam)==ID_LIST && HIWORD(wParam)==CBN_SELCHANGE )
    {

    GetWindowText(hwndList, pVarName, 30);


    SetWindowText(hwndText, pVarName);




    if( strcmp(pVarName,"Item3") == 0 ){


    CreateWindowEx( WS_EX_CLIENTEDGE,
    "Proc2",
    (LPCSTR) pVarName,
    WS_OVERLAPPEDWINDOW | WS_POPUP | WS_VISIBLE | WS_CLIPSIBLINGS,
    760,
    0,
    400,
    440,
    0,
    NULL,
    hChildInst,
    NULL );


    if( hwnd == NULL ){
    MessageBox( NULL, "Create Window failed", "Error", MB_OK );
    }

    // UpdateWindow( hwndComboWindow );

    }

    if( strcmp(pVarName,"Item4") == 0 ){


    CreateWindowEx( WS_EX_CLIENTEDGE,
    "Proc2",
    (LPCSTR) pVarName,
    WS_OVERLAPPEDWINDOW | WS_POPUP | WS_VISIBLE | WS_CLIPSIBLINGS,
    760,
    0,
    400,
    440,
    hwnd,
    NULL,
    hChildInst,
    NULL );


    if( hwnd == NULL ){
    MessageBox( NULL, "Create Window failed", "Error", MB_OK );
    }

    // UpdateWindow( hwndComboWindow );

    }

    }

    break;

    return 0;

    case WM_DESTROY:

    PostQuitMessage (0);
    break;

    default:

    return DefWindowProc (hwnd, message, wParam, lParam);
    }

    return 0;
    }

  2. #2
    VictorN's Avatar
    VictorN is online now Super Moderator Power Poster
    Join Date
    Jan 2003
    Location
    Wallisellen (ZH), Switzerland
    Posts
    17,355

    Re: Combobox Problem, new Window, new Combobox

    Please, repost your code using Code tags. Otherwise your code is absolutely unreadable, so no one will analyze it.
    Read Announcements
    Victor Nijegorodov

  3. #3
    Join Date
    Nov 2012
    Posts
    2

    Re: Combobox Problem, new Window, new Combobox

    i hope this works
    Code:
    #include <windows.h>
    
    #define ID_LIST 1
    #define ID_TEXT 2
    HINSTANCE hChildInst = 0;
    
    
    LRESULT CALLBACK WindowProcedure (HWND, UINT, WPARAM, LPARAM);
    
    
    char szClassName[ ] = "ComboBox App";
    
    int WINAPI WinMain (HINSTANCE hThisInstance,
                        HINSTANCE hPrevInstance,
                        LPSTR lpszArgument,
                        int nFunsterStil)
    
    {
        HWND hwnd;              
        MSG messages;            
        WNDCLASSEX wincl;       
    	WNDCLASSEX wincl2;
    
        
        wincl.hInstance = hThisInstance;
        wincl.lpszClassName = szClassName;
        wincl.lpfnWndProc = WindowProcedure;      
        wincl.style = CS_DBLCLKS;                 
        wincl.cbSize = sizeof (WNDCLASSEX);
    
       
        wincl.hIcon = LoadIcon (NULL, IDI_APPLICATION);
        wincl.hIconSm = LoadIcon (NULL, IDI_APPLICATION);
        wincl.hCursor = LoadCursor (NULL, IDC_ARROW);
        wincl.lpszMenuName = NULL;                
        wincl.cbClsExtra = 0;                     
        wincl.cbWndExtra = 0;                     
      
        wincl.hbrBackground = (HBRUSH) COLOR_BACKGROUND;
    
      
        if (!RegisterClassEx (&wincl))
            return 0;
    
    
    	/* The Window structure */
        wincl2.hInstance = hChildInst;
        wincl2.lpszClassName = "Proc2";
        wincl2.lpfnWndProc = WindowProcedure;     
        wincl2.style = CS_DBLCLKS;               
        wincl2.cbSize = sizeof (WNDCLASSEX);
    
        /* Use default icon and mouse-pointer */
        wincl2.hIcon = LoadIcon (NULL, IDI_APPLICATION);
        wincl2.hIconSm = LoadIcon (NULL, IDI_APPLICATION);
        wincl2.hCursor = LoadCursor (NULL, IDC_ARROW);
        wincl2.lpszMenuName = NULL;                
        wincl2.cbClsExtra = 0;                   
        wincl2.cbWndExtra = 0;                   
     
        wincl2.hbrBackground = (HBRUSH) COLOR_BACKGROUND;
    
     
        if (!RegisterClassEx (&wincl2))
            return 0;
    
    
     
        hwnd = CreateWindowEx (
               0,                  
               szClassName,         
               "ComboBox App",       
               WS_OVERLAPPEDWINDOW, 
               CW_USEDEFAULT,       
               CW_USEDEFAULT,       
               544,                 
               375,                 
               HWND_DESKTOP,       
               NULL,               
               hThisInstance,       
               NULL                
               );
    
        
        ShowWindow (hwnd, nFunsterStil);
    
        
        while (GetMessage (&messages, NULL, 0, 0))
        {
           
            TranslateMessage(&messages);
            
            DispatchMessage(&messages);
        }
    
        
        return messages.wParam;
    }
    
    
    
    void FillListBox(HWND hwndList)
    {
    	CHAR *pVarName[] = {"Item1", "Item2", "Item3", "Item4", "Item5"};
         
         for(int i=0; i<5; i++)
      
                 SendMessage(hwndList, CB_ADDSTRING, 0, (LPARAM)pVarName[i]);
         
    }
                 
    HWND hwndtest;
    
    
    LRESULT CALLBACK WindowProcedure (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
    {
        static HWND hwndList, hwndText, hwndComboWindow;
        int iIndex, iLength, cxChar, cyChar;
        CHAR pVarName[30];
            
         
            
        switch (message)                 
        {
        
            case WM_CREATE:
                 
                 cxChar = LOWORD(GetDialogBaseUnits());
                 cyChar = HIWORD(GetDialogBaseUnits());
                 
               //Create Display Window
               hwndText = CreateWindow(TEXT("static"),NULL, WS_CHILD | WS_VISIBLE |
                                       SS_LEFT, cxChar, cyChar, 
                                       GetSystemMetrics(SM_CXSCREEN), cyChar, 
                                       hwnd, (HMENU)ID_TEXT, 
                                       (HINSTANCE)GetWindowLong(hwnd, GWL_HINSTANCE), 
                                       NULL);
                 
               //Create ComboBox
               hwndList =  CreateWindow(TEXT("Combobox"), NULL, WS_CHILD | WS_VISIBLE |
                                       LBS_STANDARD, cxChar, cyChar*3, 
                                       cxChar*16 + GetSystemMetrics(SM_CXVSCROLL), 
                                       cyChar*5, hwnd, (HMENU)ID_LIST, 
                                       (HINSTANCE)GetWindowLong(hwnd, GWL_HINSTANCE),
                                       NULL);
    
    								   
    		
                                           
                 //Populate ComboBox
                 FillListBox(hwndList);
                 
                 //Set a Default Selection
                 SendMessage(hwndList, CB_SETCURSEL, 0, 0);
                 GetWindowText(hwndList, pVarName, 30);
                 SetWindowText(hwndText, pVarName);
                 
                 return 0;
                 
            case WM_COMMAND:
                 
                 if( LOWORD(wParam)==ID_LIST && HIWORD(wParam)==CBN_SELCHANGE )
                 {
                            
                     GetWindowText(hwndList, pVarName, 30);      
                     
                   
                     SetWindowText(hwndText, pVarName);
    			
    				 
         
                 
    				 if( strcmp(pVarName,"Item3") == 0 ){
    				
    					
    				CreateWindowEx( WS_EX_CLIENTEDGE,
    					"Proc2",
    					(LPCSTR) pVarName,
    					WS_OVERLAPPEDWINDOW | WS_POPUP | WS_VISIBLE | WS_CLIPSIBLINGS,  
    					760,       
    					0,        
    					400,       
    					440,        
    					0,
    					NULL,
    					hChildInst,
    					NULL );
    				
    					
    					if( hwnd == NULL ){
    			MessageBox( NULL, "Create Window failed", "Error", MB_OK );
    			}
    			
    			//	UpdateWindow( hwndComboWindow );	
    
    					}
    
    				 if( strcmp(pVarName,"Item4") == 0 ){
    				
    					
    				CreateWindowEx( WS_EX_CLIENTEDGE,
    					"Proc2",
    					(LPCSTR) pVarName,
    					WS_OVERLAPPEDWINDOW | WS_POPUP | WS_VISIBLE | WS_CLIPSIBLINGS,  
    					760,       
    					0,       
    					400,      
    					440,      
    					hwnd,
    					NULL,
    					hChildInst,
    					NULL );
    				
    					
    					if( hwnd == NULL ){
    			MessageBox( NULL, "Create Window failed", "Error", MB_OK );
    			}
    			
    		//		UpdateWindow( hwndComboWindow );	
    
    					}
    		
    			 }
    				
    				break;  
    			
                 return 0;    
               
            case WM_DESTROY:
                 
                PostQuitMessage (0);      
                break;
            
            default: 
                                        
                return DefWindowProc (hwnd, message, wParam, lParam);
        }
    
        return 0;
    }

  4. #4
    VictorN's Avatar
    VictorN is online now Super Moderator Power Poster
    Join Date
    Jan 2003
    Location
    Wallisellen (ZH), Switzerland
    Posts
    17,355

    Re: Combobox Problem, new Window, new Combobox

    Well, you create your both windows with the same window procedure. And within this procedure you create a combobox. Then why do you wonder "there is a new combobox in the new window"?
    Victor Nijegorodov

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