What about using some API calls to find the hWnd of the textbox in Window2. Take a look at: - FindWindow - GetDlgItem Use it somewhat as follows: HWND hMainWindow = FindWindow("[ClassName of main window]", NULL); if(hMainWindow != NULL) { HWND hTextbox = GetDlgItem(hMainWindow, [ID of the textbox]); ... } You can find out the classname of the main window and the ID of the textbox using Greatis Windowse (google on it, I don't have the link just like that). Once you figured out the hWnd of the textbox, you can use SetWindowText or a SendMessage WM_SETTEXT to put the text in the box in dialog 2. Another option might be SetDlgItemText, but then you can't check the hTextBox hWnd to be valid or not before sending. Good luck! - Fahr

by the way ,i had added AfxEnableControlContainer() in my dll app. if i add activeX control using resource edit,the dialog will not show at all. if i dynamically create the control in the program. create failed. gucy

i'v found the control now gucy

Hmmm. I can't help much more - I'm not an expert on DLLs. Have a look at MFC technical note TN058 which explains module state switching in detail. As far as I can see, the first one should work :~ . Ryan Being little and getting pushed around by big guys all my life I guess I compensate by pushing electrons and holes around. What a bully I am, but I do enjoy making subatomic particles hop at my bidding - Roger Wright (2nd April 2003, The Lounge) Punctuality is only a virtue for those who aren't smart enough to think of good excuses for being late - John Nichol "Point Of Impact"

gucy wrote: i create a regular dll named MyDll using MFC... If by "regular dll" you mean a non-MFC DLL, this is rather contradictory, don't you think? gucy wrote: who can tell me what's wrong to my program? I would guess that it's too early to be calling such functions. The DLL is not fully initialized at this point, and something within CDialog requires the DLL to be up and ready to go.

gucy wrote: free the library by itself What exactly do you mean by this?

i did let mfc to do it.and i didn't change the parameter or return type. i've look up the msdn.it said the function is called when the view is first attached to the document.but my app has no document.it is a extension dll,and the view is just one of the views of the splitterwindow. Does that do something to my app? gucy

I sent you a mail... rechi

The sizeof keyword gives the amount of storage, in bytes, associated with a variable or a type. Which means that in your case your are getting the size of str which is nothing but a pointer. A pointer stores a memory location, which is only 4 bytes. If you truly want to get the size in bytes of your string that you should try this: size = sizeof(char) * strlen(str) // Afterall, I realized that even my comment lines have bugs

You're welcome :) Ryan Being little and getting pushed around by big guys all my life I guess I compensate by pushing electrons and holes around. What a bully I am, but I do enjoy making subatomic particles hop at my bidding - Roger Wright (2nd April 2003, The Lounge) Punctuality is only a virtue for those who aren't smart enough to think of good excuses for being late - John Nichol "Point Of Impact"

not necessarily. It could be std itself. Check /MD, /MT compiler flags.

As Eugene Pustovoyt said, the font variable needs to be a global variable. It really doesn't matter if it works for you (no offense) or for anyone else. It won't work all the time. MSDN says that the font variable MUST be a global variable and I learned that the hard way. // Afterall, I realized that even my comment lines have bugs

You are greate! This is commom error for beiginners

IN ResourceView you can find the string table ,double click the blank and enter your string