Thread: EM_EXSETSEL won't work in multiline edit control (c, not c++)

hi,

I work with a modeless dialog that contains a multiline edit control created with:

ES_MULTILINE | ES_AUTOVSCROLL | ES_WANTRETURN | WS_VSCROLL

processing EN_KILLFOCUS I can set text by: SetDlgItemText(), append text with: EM_REPLACESEL and retreave the content of the control using: GetDlgItemText(). everything works fine.

but I'm unable to determine the length of the text in the control to allocate memory. neither:

cr.cpMin=0;
cr.cpMax=-1;
SendMessage((HWND)lP, EM_EXSETSEL, 0, (LPARAM)&cr);

nor:

gtl.flags = GTL_NUMCHARS | GTL_PRECISE | GTL_USECRLF;
gtl.codepage = CP_ACP;
len = SendMessage((HWND)lP, EM_GETTEXTLENGTHEX, (WPARAM)&gtl, (LPARAM)0);

both methodes failed to get the size.

any hint or comment would be great,
thank you

The first line on the Win32 Reference Manual about 'EM_EXSETSEL' says:

Code:

The EM_EXSETSEL message selects a range of characters and/or OLE objects in a rich edit control.

See also the CHARRANGE definition:

Code:

The CHARRANGE structure specifies a range of characters in a rich edit control.

I'm not tested it, but maybe you want try to create a rich edit control instead an edit control. On a simple edit control (no matter if multiline, autoscrolls, etc), the message to get the text length is WM_GETTEXTLENGTH.

Hope that helps
Niara