Textfield...

Let's say I have a textfield, a command button and a string.
How would I transfer the value of the textfield to the string when the button is pressed????

Window or Dialogue?

Code:

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long fl  =SendMessage(edithwnd,WM_GETTEXTLENGTH,0,0);
TCHAR *ft = new TCHAR[++fl];
SendMessage(edithwnd,WM_GETTEXT,fl,(LPARAM)ft);
/*ft contains text*/

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If you are using a dialogue then you can use the GetDlgItemText function.

Also you can use the string class (much easier to manipulate with the string).

Assuming you have the handle:

Code:

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LPSTR sText;
DWORD dwLength = GetWindowTextLength(handle);
sText = (char*)GlobalAlloc(GPTR, dwLength + 1);
GetWindowText(handle, sText, dwLength + 1);

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Megatron - your code isn't macro-safe :( You need to use TCHAR. Incidentally, why use GlobalAlloc when new[] gives you type-safety?

Hi guys!
It's a dialog...

I tried out the following code, but windows closed my program......did I do that.....:D

Code:

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LPSTR strText;
                                GetDlgItemText(hDlg,Text1, strText, 40);
                                MessageBox(NULL, strText, "Test", MB_OK);

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It closed because you didn't allocate a buffer. You need to use TCHAR* and GetTextLength, as posted above. Then, just use:

Code:

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basic_string<TCHAR> sText = pcBuf; // or whatever it's called
delete[] pcBuf;

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I normally typedef basic_string<TCHAR> to tstring to make life easier.

I don't quite get it, parksie.....could you please put together a small example....;)

Catch the button's notification message (see the PSDK for details, look under BN_CLICK ;)). Then use Vlatko's code, posted above.

Here's a DialogProc from a working program. replace IDC_TEXTBOXNAME and IDC_BUTTONNAME with the names of the textbox and the button.

Code:

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BOOL CALLBACK DialogProc(HWND hDlg, UINT uMsg, WPARAM wParam, LPARAM)
{
        HWND edithwnd;
        TCHAR *ft;
        switch(uMsg) {
        case WM_CLOSE:
                EndDialog(hDlg, 0);
                break;
       
        case WM_INITDIALOG:
               
                SetDlgItemText(hDlg, IDC_TEXTBOXNAME, "Text Goes Here");
                break;
               
        case WM_COMMAND:
                if(wParam == MAKEWPARAM(IDC_BUTTONNAME, BN_CLICKED))
                {
                       
                        edithwnd = GetDlgItem(hDlg, IDC_TEXTBOXNAME);
                        long fl  =SendMessage(edithwnd,WM_GETTEXTLENGTH,0,0);
                        ft = new TCHAR[++fl];
                        SendMessage(edithwnd,WM_GETTEXT,fl,(LPARAM)ft);
                        MessageBox(hDlg, ft, "Textbox Says...", MB_OK);

                }
                break;
               
        default:
                return FALSE;
        }

        return TRUE;
}

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