Пример #1
0
        public DialogResult ShowDialog()
        {
            //set up the struct and populate it

            OpenFileName ofn = new OpenFileName();

            ofn.lStructSize = Marshal.SizeOf(ofn);
            ofn.lpstrFilter = m_Filter.Replace('|', '\0') + '\0';

            ofn.lpstrFile      = m_FileName + new string(' ', 512);
            ofn.nMaxFile       = ofn.lpstrFile.Length;
            ofn.lpstrFileTitle = System.IO.Path.GetFileName(m_FileName) + new string(' ', 512);
            ofn.nMaxFileTitle  = ofn.lpstrFileTitle.Length;
            ofn.lpstrTitle     = "Save file as";
            ofn.lpstrDefExt    = m_DefaultExt;

            //position the dialog above the active window
            ofn.hwndOwner = Form.ActiveForm.Handle;

            //we need to find out the active screen so the dialog box is
            //centred on the correct display

            m_ActiveScreen = Screen.FromControl(Form.ActiveForm);

            //set up some sensible flags
            ofn.Flags = OFN_EXPLORER | OFN_PATHMUSTEXIST | OFN_NOTESTFILECREATE | OFN_ENABLEHOOK | OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT;

            //this is where the hook is set. Note that we can use a C# delegate in place of a C function pointer
            ofn.lpfnHook = new OFNHookProcDelegate(HookProc);

            //if we're running on Windows 98/ME then the struct is smaller
            if (System.Environment.OSVersion.Platform != PlatformID.Win32NT)
            {
                ofn.lStructSize -= 12;
            }

            //show the dialog

            if (!GetSaveFileName(ref ofn))
            {
                int ret = CommDlgExtendedError();

                if (ret != 0)
                {
                    throw new ApplicationException("Couldn't show file open dialog - " + ret.ToString());
                }

                return(DialogResult.Cancel);
            }

            m_FileName = ofn.lpstrFile;

            return(DialogResult.OK);
        }
Пример #2
0
 private static extern bool GetSaveFileName(ref OpenFileName lpofn);