Using subclass technology, let the Edit Control in the dialog box accept the tab key (purely copying msdn)

The following example shows how to subclass an instance of an edit control in a dialog box. the subclass window procedure enables the Edit Control to receive all keyboard input, including the enter and Tab keys, whenever the control has the input focus.

Wndproc wporigeditproc; lresult apientry editboxproc (hwnd hwnddlg, uint umsg, wparam, lparam) {hwnd hwndedit; Switch (umsg) {Case wm_initdialog: // retrieve the handle to the Edit Control. hwndedit = getdlgitem (hwnddlg, id_edit); // subclass the Edit Control. wporigeditproc = (wndproc) setwindowlong (hwndedit, gwl_wndproc, (long) editsubclassproc); // continue the initialization procedure. // return true; Case wm_destroy: // remove the subclass from the Edit Control. setwindowlong (hwndedit, gwl_wndproc, (long) wporigeditproc); // continue the cleanup procedure. // break;} return false; unreferenced_parameter (lparam);} // subclass procedure lresult apientry editsubclassproc (hwnd, uint umsg, wparam, lparam) {If (umsg = wm_getdlgcode) return dlgc_wantallkeys; return callwindowproc (wporigeditproc, hwnd, umsg, wparam, lparam );}