private void ChangeActiveXStateUpTo(ActiveXHelper.ActiveXState state)
{
if (!this.GetActiveXHostState(ActiveXHelper.InTransition))
{
this.SetActiveXHostState(ActiveXHelper.InTransition, true);
try
{
while (state > this.activeXState)
{
switch (this.activeXState)
{
case ActiveXHelper.ActiveXState.Passive:
this.activeXInstance = UnsafeNativeMethods.CoCreateInstance <TActiveXClass, TActiveXInterface>(null, NativeMethods.tagCLSCTX.CLSCTX_INPROC_SERVER, NativeMethods.ActiveX.IID_IUnknown);
this.activeXState = ActiveXHelper.ActiveXState.Loaded;
this.AttachInterfacesInternal();
continue;
case ActiveXHelper.ActiveXState.Loaded:
try
{
if ((this.activeXOleObject.GetMiscStatus(NativeMethods.tagDVASPECT.DVASPECT_CONTENT) & NativeMethods.tagOLEMISC.OLEMISC_SETCLIENTSITEFIRST) != 0)
{
this.activeXOleObject.SetClientSite(this.ActiveXSite);
}
}
catch { }
if (!base.DesignMode)
{
this.StartEvents();
}
this.activeXState = ActiveXHelper.ActiveXState.Running;
continue;
case ActiveXHelper.ActiveXState.Running:
try
{
this.DoVerb(NativeMethods.OLEIVERB.OLEIVERB_INPLACEACTIVATE);
}
catch (Exception ex)
{
throw new TargetInvocationException(ResourcesHelper.GetString(ResourcesHelper.ActiveXNoWindowHandle, new object[] { base.GetType().Name }), ex);
}
ControlShim.CreateControl(this, true);
this.activeXState = ActiveXHelper.ActiveXState.InPlaceActive;
continue;
case ActiveXHelper.ActiveXState.InPlaceActive:
try
{
this.DoVerb(NativeMethods.OLEIVERB.OLEIVERB_UIACTIVATE);
}
catch (Exception ex)
{
throw new TargetInvocationException(ResourcesHelper.GetString(ResourcesHelper.ActiveXNoWindowHandle, new object[] { base.GetType().Name }), ex);
}
this.activeXState = ActiveXHelper.ActiveXState.UIActive;
continue;
}
//this.activeXState += ActiveXHelper.ActiveXState.Loaded;
this.activeXState = (ActiveXHelper.ActiveXState)((int)(this.activeXState) + (int)(ActiveXHelper.ActiveXState.Loaded));
}
}
finally
{
this.SetActiveXHostState(ActiveXHelper.InTransition, false);
}
}
}
protected override void WndProc(ref Message m)
{
switch (m.Msg)
{
case NativeMethods.WM_LBUTTONDOWN:
case NativeMethods.WM_RBUTTONDOWN:
case NativeMethods.WM_MBUTTONDOWN:
case NativeMethods.WM_MOUSEACTIVATE:
if (!base.DesignMode)
{
this.Focus();
}
this.DefWndProc(ref m);
return;
case NativeMethods.WM_LBUTTONUP:
case NativeMethods.WM_LBUTTONDBLCLK:
case NativeMethods.WM_RBUTTONUP:
case NativeMethods.WM_RBUTTONDBLCLK:
case NativeMethods.WM_MBUTTONUP:
case NativeMethods.WM_MBUTTONDBLCLK:
case NativeMethods.x2055:
case NativeMethods.WM_CONTEXTMENU:
case NativeMethods.WM_ERASEBKGND:
case NativeMethods.WM_SYSCOLORCHANGE:
case NativeMethods.WM_SETCURSOR:
case NativeMethods.WM_DRAWITEM:
this.DefWndProc(ref m);
return;
case NativeMethods.WM_COMMAND:
if (!ControlShim.ReflectMessageInternal(m.LParam, ref m))
{
this.DefWndProc(ref m);
}
return;
case NativeMethods.WM_HELP:
base.WndProc(ref m);
this.DefWndProc(ref m);
return;
case NativeMethods.WM_DESTROY:
break;
case NativeMethods.WM_KILLFOCUS:
this.hwndFocus = m.WParam;
try
{
base.WndProc(ref m);
return;
}
finally
{
this.hwndFocus = IntPtr.Zero;
}
default:
if (m.Msg == ActiveXHelper.REGMSG_MSG)
{
m.Result = (IntPtr)0x7b;
}
else
{
base.WndProc(ref m);
}
return;
}
if ((this.activeXState >= ActiveXHelper.ActiveXState.InPlaceActive))
{
IntPtr window = this.activeXOleInPlaceObject.GetWindow();
if (window != IntPtr.Zero)
{
ApplicationShim.ParkHandle(new HandleRef(this.activeXOleInPlaceObject, window));
}
}
if (base.RecreatingHandle)
{
this.activeXReloadingState = this.activeXState;
}
this.ChangeActiveXStateDownTo(ActiveXHelper.ActiveXState.Running);
if (this.activeXWindow != null)
{
this.activeXWindow.ReleaseHandle();
}
this.OnHandleDestroyed(EventArgs.Empty);
}
