🚀 go-pugleaf

"Dennis Jones" <nospam@nospam.com> wrote in message
news:440cc788$1@newsgroups.borland.com...

> I would like to center the SHBrowseForFolder window
> over the window that it was called from.

You need to provide a callback function in the BROWSEINFO structure.

> The problem is that to correctly position the window, I must know
> its size first.  Unfortunately, the browse window always opens to its
> minimum size, and then updates its size only after all of the
initialization
> has occured.

The callback function receives the BFFM_INITIALIZED notification when the
dialog has been fully initialized.  You can then query the dialog's current
size and then re-position it as needed.

> Thus, if I try to execute my centering code from anywhere within the
> BrowseCallbackProc function, it is always too early because the
> window's size has not been updated yet.

Works fine when I use it.

> I was hoping I could post a custom message that would be received
> by BrowseCallbackProc, but I don't see an obvious way to do that.

You cannot post custom messages to that dialog.

> Does anyone know how I can execute some custom code after
> the browse window has been displayed and initialized?

Use the BFFM_INITIALIZED notification.  For example:

    int __stdcall BrowseCallbackProc(HWND hDlg, UINT uMsg, LPARAM lParam,
LPARAM lpData)
    {
        if( uMsg == BFFM_INITIALIZED )
        {
            TForm1 *pForm = reinterpret_cast<TForm1*>(lpData);

            RECT r = {0};
            ::GetWindowRect(hDlg, &r);

            ::SetWindowPos(
                hDlg,
                NULL,
                pForm->Left + (pForm->Width/2) - ((r.right-r.left)/2),
                pForm->Top + (pForm->Height/2) - ((r.bottom-r.top)/2),
                0,
                0,
                SWP_NOSIZE | SWP_NOZORDER | SWP_NOOWNERZORDER);
        }
        return 0;
    }

    void __fastcall TForm1::Button1Click(TObject *Sender)
    {
        TCHAR buffer[MAX_PATH+1];

        BROWSEINFO bi = {0};
        bi.hwndOwner = Handle;
        bi.pszDisplayName = buffer;
        bi.lpszTitle = "";
        bi.ulFlags = BIF_RETURNONLYFSDIRS;
        bi.lpfn = BrowseCallbackProc;
        bi.lParam = reinterpret_cast<int>(this);

        LPITEMIDLIST pidl = SHBrowseForFolder(&bi);
        if( pidl )
        {
            //...
            CoTaskMemFree(pidl);
        }
    }


Gambit