Thread: Need a little help here about MFC and Tab Control stuff...

Hey,

I finally figured out how to get a CTabCtrl to display different pages, with the use of an overridden CTabCtrl class. However, now I'm just a little confused as to how to fill and retrieve various controls on different tab pages.

I've got all the dialogs that the tabs are going to display in a vector (vector<CDialog*> m_Dialogs. However, I got mixed up as to how I am supposed to fill these fields (I need to pass then the reference of a class, and there will be different classes for different dialogs). And then, how can I retrieve the dialog's data when the user presses "OK" on the main screen where the actual tab control is held?

Because I've put all the dialogs in a vector of CDialog, all their member variables do not exist in the CDialog datatype, so I have no way of accessing them. How can I resolve this?

I've been trying to look into this on google, but every tutorial I've come across only shows how to display different dialogs on a tab control, and not how to access the controls in the dialogs...

Any help regarding this problem will be greatly appreciated.

Thanks in advance,

Guitarist809

Not sure if this is what you are looking for but an options dialog I made looks like this. It basically just hides the windows/controls as the different tabs are selected. Another way is to make a static window, and have the static window be the owner of all the objects/child windows you want and just hide or show the static window. As for getting the information you could use SendMessage to get whatever state you want, or text, or whatever. Don't know if any of this is relevant to you and what you're doing but it might help.

Code:

//Options dialog
BOOL CALLBACK OptionsProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    HDC hDC, hdc, t_hDC;
    //PAINTSTRUCT Ps;
    //HBITMAP bmpMathTable;
    TCITEM tcitem;
    NMHDR *pNMHdr;

    int tabctrl[10];

    switch(message)
    {
        case WM_NOTIFY:
        {
            pNMHdr = (NMHDR *) lParam;

            if (pNMHdr->code == TCN_SELCHANGE)
            {
                int tabnum = TabCtrl_GetCurSel((HWND)pNMHdr->hwndFrom);

                hDC = GetDC(hwndTab);

                if(tabnum == 0){
                    //Show these windows
                    ShowWindow(GetDlgItem(hwnd,SU_UPDATES),SW_SHOW);
                    ShowWindow(GetDlgItem(hwnd,SU_TEXT),SW_SHOW);
                    //Hide these windows
                    ShowWindow(GetDlgItem(hwnd,SU_BEEP),SW_HIDE);                    
                }
                if(tabnum == 1){
                    //Show these windows
                    ShowWindow(GetDlgItem(hwnd,SU_BEEP),SW_SHOW);
                    //Hide these windows
                    ShowWindow(GetDlgItem(hwnd,SU_UPDATES),SW_HIDE);
                    ShowWindow(GetDlgItem(hwnd,SU_TEXT),SW_HIDE);

                }
                
                ReleaseDC(hwndTab, hDC);
            }
            break;
        }
        case WM_INITDIALOG:
        {
            //LOAD TABS
            
            RECT rect;
            OptionsHwnd = hwnd;

            //Get the size of the initial window space to work with
            GetClientRect(hwnd, &rect);
            InitCommonControls();

            //Create tabbed window
            hwndTab = CreateWindow(WC_TABCONTROL,"",WS_CHILD|WS_VISIBLE,
                0,0,rect.right,rect.bottom,hwnd,NULL,
                (HINSTANCE)GetWindowLong(hwnd,GWL_HINSTANCE),NULL);

            //Set up tabs
            tcitem.mask = TCIF_TEXT;
            tcitem.iImage = -1;

            //Create tabs
            tcitem.pszText = "Startup"; tabctrl[0] = TabCtrl_InsertItem(hwndTab, 0, &tcitem);
            tcitem.pszText = "Run Time"; tabctrl[1]= TabCtrl_InsertItem(hwndTab, 1, &tcitem);

            //Change tab font
            SendMessage (hwndTab,WM_SETFONT,(WPARAM) GetStockObject(DEFAULT_GUI_FONT), 0);

            //Get the size of the tab window
            GetClientRect(hwndTab, &rect);
      
            //DONE LOADING TABS
            
            GetCurrentDirectory(GetCurrentDirectory(0,NULL)+1,startupiniDir);
            strcat(startupiniDir,"\\startup.ini");

            char* su_answer = new char[10];

            //See if automatic updates is on or off
            GetPrivateProfileString("startup","updateonstartup","no",su_answer,
                sizeof(su_answer),startupiniDir);
            //Check automatic updates if needed
            if((strcmp("yes",su_answer)) == 0)
                SendDlgItemMessage(hwnd,SU_UPDATES,BM_SETCHECK,BST_CHECKED,0);

            //Find out if BeepOnFile is set to true or false
            GetPrivateProfileString("startup","beeponfile","no",su_answer,
                sizeof(su_answer),startupiniDir);
            //Check BeepOnFile if needed
            if((strcmp("yes",su_answer)) == 0)
                SendDlgItemMessage(hwnd,SU_BEEP,BM_SETCHECK,BST_CHECKED,0);

            delete [] su_answer;
            
            ShowWindow(GetDlgItem(hwnd,SU_BEEP),SW_HIDE); //Hide run time options
        }
        break;

        case WM_COMMAND:
        switch(LOWORD(wParam))
        {
            case SU_DONE:
            {
               //Do stuff

                PostMessage(hwnd,WM_CLOSE,0,0);
            }
            break;
        }
        break;

        case WM_CLOSE:
            EndDialog(hwnd,0);
            break;

        default:                      /* for messages that we don't deal with */
            return false;
    }

    return 0;
}


OPT_DIALOG DIALOGEX 75,55,300,100
STYLE WS_CAPTION|WS_MINIMIZEBOX
CAPTION "Options"
FONT 9, "MS Sans Serif"
BEGIN

//LTEXT               "These are the options you can select for each start up.\n",
                    //SU_TEXT,5,5,250,19

AUTOCHECKBOX      "Automatically check for updates on each start up",
                    SU_UPDATES,5,28,225,10
AUTOCHECKBOX      "Beep on start up",
                    SU_BEEP,5,28,100,10

LTEXT               "Changes will take effect on next start up",SU_TEXT,5,85,135,10
PUSHBUTTON          "Apply",SU_DONE,260,78,30,14

END

Thanks for the reply.

That sort-of what I needed. I already got the part where the tabs switch the window (CDialog dialogs). I just need to figure out how to grab the values from those dialogs that are switched out upon switching the tab.

Originally Posted by guitarist809

Thanks for the reply.

That sort-of what I needed. I already got the part where the tabs switch the window (CDialog dialogs). I just need to figure out how to grab the values from those dialogs that are switched out upon switching the tab.

Are the dialogs children of the TAB or the TABs parent?

When the tab changes the dialogs can call GetParent() (repeatedly if required) to get back to the TAB ctrl (or higher).

The trigger to do this is probably the OnKillFocus() msg.

Hey,

Actually, I've completely changed the layout of the program. I learned about property pages and property sheets (total lifesavers). I've pretty much got everything under control as of now.

Thanks for the help so far everyone!