}// DialogProcHook
//-------------------------------------------------
// PropSheetDialogProc
//
// This function will handle all messages coming sent
// to the property page
//-------------------------------------------------
internal bool PropPageDialogProc(IntPtr hwndDlg, uint msg, IntPtr wParam, IntPtr lParam)
{
m_pphWnd = hwndDlg;
// See if we've been subclassed...
if (m_dlgHook != null)
{
// If our hook handled the message, then we don't need to do
// anything anymore. :)
if (m_dlgHook(hwndDlg, msg, wParam, lParam))
{
return(true);
}
}
switch (msg)
{
case WM.NOTIFY:
// lParam really is a pointer to a NMHDR structure....
NMHDR nm = new NMHDR();
nm = (NMHDR)Marshal.PtrToStructure(lParam, nm.GetType());
switch (nm.code)
{
case PSN.SETACTIVE:
SetWindowLong(hwndDlg, 0, WizSetActive(hwndDlg));
return(true);
case PSN.WIZBACK:
SetWindowLong(hwndDlg, 0, WizBack(hwndDlg));
return(true);
case PSN.WIZNEXT:
StartWaitCursor();
SetWindowLong(hwndDlg, 0, WizNext(hwndDlg));
EndWaitCursor();
return(true);
case PSN.WIZFINISH:
SetWindowLong(hwndDlg, 0, WizFinish(hwndDlg));
return(true);
}
break;
default:
// We didn't handle this message
return(false);
}
return(false);
}// PropPageDialogProc
}// DialogProcHook
//-------------------------------------------------
// PropSheetDialogProc
//
// This function will handle all messages coming sent
// to the property page
//-------------------------------------------------
internal bool PropPageDialogProc(IntPtr hwndDlg, uint msg, IntPtr wParam, IntPtr lParam)
{
try
{
// See if we've been subclassed...
if (m_dlgHook != null)
{
// If our hook handled the message, then we don't need to do
// anything anymore. :)
if (m_dlgHook(hwndDlg, msg, wParam, lParam))
{
return(true);
}
}
switch (msg)
{
case WM.INITDIALOG:
BeginInsertPropSheetPageControls(hwndDlg);
return(true);
case WM.DESTROY:
// We're not going to make changes to this
m_fChanges = false;
// tell MMC that we're done with the property sheet
if (m_iCookie != -1)
{
CNodeManager.GetNode(m_iCookie).FreePropertySheetNotifyHandle();
return(true);
}
// If we don't belong to a specific node, then we can't handle
// this message
return(false);
case WM.PAINT:
// WinForms has problems repainting managed controls on an unmanaged
// form. We'll intercept every paint message and force all the
// managed controls to repaint themselves. This will create a little
// flicker, but it's better (for now) than having controls not show
// up at all.
if (m_uc != null)
{
m_uc.Refresh();
}
return(false);
case WM.NOTIFY:
// lParam really is a pointer to a NMHDR structure....
NMHDR nm = new NMHDR();
nm = (NMHDR)Marshal.PtrToStructure(lParam, nm.GetType());
// We're about to lose focus of this property page. Make sure the data
// is valid before we allow that
//
// We only want to do validation though if they've made changes
if (nm.code == PSN.KILLACTIVE && m_fChanges)
{
if (!ValidateData())
{
// The data on the page had errors
SetWindowLong(hwndDlg, 0, 1);
}
return(true);
}
// If we're being told to apply changes made in the property pages....
else if (nm.code == PSN.APPLY)
{
// We'll only run through the Validate/Apply if the user made changes
if (m_fChanges)
{
// First, call a validate on the current page
if (!ValidateData() || !ApplyData())
{
// There were errors on this page...
// Set the appropriate return code here.
SetWindowLong(hwndDlg, 0, (int)PSNRET.INVALID_NOCHANGEPAGE);
}
else
{
m_fChanges = false;
}
return(true);
}
}
else if (nm.code == PSN.QUERYCANCEL)
{
// Ok, so this may look odd. Why do we send an WM_INITDIALOG right
// after we get a QUERYCANCEL?
//
// Well, our dialogs expect WM.INITDIALOG to be sent to them each time
// they are shown. Well, unfortunately, that doesn't seem to be the case
// now. It is sent once, when it is first shown. Now, we'll make
// sure it gets send again.
PostMessage(hwndDlg, WM.INITDIALOG, 0, 0);
}
break;
default:
// We'll let the default windows message handler handle the rest of
// the messages
return(false);
}
}
catch (Exception)
{
// We encountered an exception... let's just swallow the error and
// hope everything will be ok.
//
// If we let this exception continue, it will kill the thread that's pumping
// messages for the property page. This will cause MMC to hang. Not what we want.
}
return(false);
}// PropPageDialogProc
