Textfield...

[CyberCarsten]

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????

[parksie]

Window or Dialogue?

[Vlatko]

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

[Vlatko]

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).

[Megatron]

Assuming you have the handle:

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

[parksie]

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

[CyberCarsten]

Hi guys!
It's a dialog...

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

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

[parksie]

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

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

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

[CyberCarsten]

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

[parksie]

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

[denniswrenn]

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

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;
}