/// <summary>
/// The CallbackProc. Called by the shell to inform of key property page events.
/// </summary>
/// <param name="hWnd">The h WND.</param>
/// <param name="uMsg">The u MSG.</param>
/// <param name="ppsp">The PPSP.</param>
/// <returns></returns>
private uint CallbackProc(IntPtr hWnd, PSPCB uMsg, ref PROPSHEETPAGE ppsp)
{
switch (uMsg)
{
case PSPCB.PSPCB_ADDREF:
// Increment the reference count.
referenceCount++;
break;
case PSPCB.PSPCB_RELEASE:
// Decrement the reference count.
referenceCount--;
// If we're down to zero references, cleanup.
if (referenceCount == 0)
Cleanup();
break;
case PSPCB.PSPCB_CREATE:
// Allow the sheet to be created.
return 1;
}
return 0;
}
/// <summary>
/// The CallbackProc. Called by the shell to inform of key property page events.
/// </summary>
/// <param name="hWnd">The h WND.</param>
/// <param name="uMsg">The u MSG.</param>
/// <param name="ppsp">The PPSP.</param>
/// <returns></returns>
private uint CallbackProc(IntPtr hWnd, PSPCB uMsg, ref PROPSHEETPAGE ppsp)
{
switch (uMsg)
{
case PSPCB.PSPCB_ADDREF:
break;
case PSPCB.PSPCB_RELEASE:
break;
case PSPCB.PSPCB_CREATE:
// Allow the sheet to be created.
return 1;
}
return 0;
}
/// <summary>
/// Creates the property page handle.
/// </summary>
public void CreatePropertyPageHandle(NativeBridge.NativeBridge nativeBridge)
{
Logging.DebugLog("Creating property page handle via bridge.");
// Create a prop sheet page structure.
var psp = new PROPSHEETPAGE();
// Set the key properties.
psp.dwSize = (uint)Marshal.SizeOf(psp);
psp.hInstance = nativeBridge.GetInstanceHandle();
psp.dwFlags = PSP.PSP_DEFAULT | PSP.PSP_USETITLE | PSP.PSP_USECALLBACK;
psp.pTemplate = nativeBridge.GetProxyHostTemplate();
psp.pfnDlgProc = dialogProc;
psp.pcRefParent = 0;
psp.pfnCallback = callbackProc;
psp.lParam = IntPtr.Zero;
// If we have a title, set it.
if (!string.IsNullOrEmpty(Target.PageTitle))
{
psp.dwFlags |= PSP.PSP_USETITLE;
psp.pszTitle = Target.PageTitle;
}
// If we have an icon, set it.
if (Target.PageIcon != null && Target.PageIcon.Handle != IntPtr.Zero)
{
psp.dwFlags |= PSP.PSP_USEHICON;
psp.hIcon = Target.PageIcon.Handle;
}
// Create a the property sheet page.
HostWindowHandle = Comctl32.CreatePropertySheetPage(ref psp);
}
public static extern IntPtr CreatePropertySheetPage(ref PROPSHEETPAGE psp);
