internal bool GetMessageLoop(bool mustBeActive)
{
if (this.messageLoopCount > ((mustBeActive && this.externalComponentManager) ? 1 : 0))
{
return true;
}
if ((this.ComponentManager != null) && this.externalComponentManager)
{
if (!mustBeActive)
{
return true;
}
System.Windows.Forms.UnsafeNativeMethods.IMsoComponent[] ppic = new System.Windows.Forms.UnsafeNativeMethods.IMsoComponent[1];
if (this.ComponentManager.FGetActiveComponent(0, ppic, null, 0) && (ppic[0] == this))
{
return true;
}
}
Application.MessageLoopCallback messageLoopCallback = this.messageLoopCallback;
return ((messageLoopCallback != null) && messageLoopCallback());
}
bool System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FSetTrackingComponent(IntPtr dwComponentID, bool fTrack)
{
int num = (int) ((long) dwComponentID);
ComponentHashtableEntry entry = (ComponentHashtableEntry) this.OleComponents[num];
if (entry == null)
{
return false;
}
if ((entry.component == this.trackingComponent) ^ fTrack)
{
return false;
}
if (fTrack)
{
this.trackingComponent = entry.component;
}
else
{
this.trackingComponent = null;
}
return true;
}
bool System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FRevokeComponent(IntPtr dwComponentID)
{
int key = (int) ((long) dwComponentID);
ComponentHashtableEntry entry = (ComponentHashtableEntry) this.OleComponents[key];
if (entry == null)
{
return false;
}
if (entry.component == this.activeComponent)
{
this.activeComponent = null;
}
if (entry.component == this.trackingComponent)
{
this.trackingComponent = null;
}
this.OleComponents.Remove(key);
return true;
}
bool System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(IntPtr dwComponentID, int reason, int pvLoopData)
{
int key = (int) ((long) dwComponentID);
int currentState = this.currentState;
bool flag = true;
if (!this.OleComponents.ContainsKey(key))
{
return false;
}
System.Windows.Forms.UnsafeNativeMethods.IMsoComponent activeComponent = this.activeComponent;
try
{
System.Windows.Forms.NativeMethods.MSG msg = new System.Windows.Forms.NativeMethods.MSG();
System.Windows.Forms.NativeMethods.MSG[] pMsgPeeked = new System.Windows.Forms.NativeMethods.MSG[] { msg };
bool flag2 = false;
ComponentHashtableEntry entry = (ComponentHashtableEntry) this.OleComponents[key];
if (entry == null)
{
return false;
}
System.Windows.Forms.UnsafeNativeMethods.IMsoComponent component = entry.component;
this.activeComponent = component;
while (flag)
{
System.Windows.Forms.UnsafeNativeMethods.IMsoComponent trackingComponent;
if (this.trackingComponent != null)
{
trackingComponent = this.trackingComponent;
}
else if (this.activeComponent != null)
{
trackingComponent = this.activeComponent;
}
else
{
trackingComponent = component;
}
if (System.Windows.Forms.UnsafeNativeMethods.PeekMessage(ref msg, System.Windows.Forms.NativeMethods.NullHandleRef, 0, 0, 0))
{
pMsgPeeked[0] = msg;
flag = trackingComponent.FContinueMessageLoop(reason, pvLoopData, pMsgPeeked);
if (flag)
{
if ((msg.hwnd != IntPtr.Zero) && System.Windows.Forms.SafeNativeMethods.IsWindowUnicode(new HandleRef(null, msg.hwnd)))
{
flag2 = true;
System.Windows.Forms.UnsafeNativeMethods.GetMessageW(ref msg, System.Windows.Forms.NativeMethods.NullHandleRef, 0, 0);
}
else
{
flag2 = false;
System.Windows.Forms.UnsafeNativeMethods.GetMessageA(ref msg, System.Windows.Forms.NativeMethods.NullHandleRef, 0, 0);
}
if (msg.message == 0x12)
{
Application.ThreadContext.FromCurrent().DisposeThreadWindows();
if (reason != -1)
{
System.Windows.Forms.UnsafeNativeMethods.PostQuitMessage((int) msg.wParam);
}
flag = false;
goto Label_024C;
}
if (!trackingComponent.FPreTranslateMessage(ref msg))
{
System.Windows.Forms.UnsafeNativeMethods.TranslateMessage(ref msg);
if (flag2)
{
System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(ref msg);
}
else
{
System.Windows.Forms.UnsafeNativeMethods.DispatchMessageA(ref msg);
}
}
}
}
else
{
if ((reason == 2) || (reason == -2))
{
goto Label_024C;
}
bool flag4 = false;
if (this.OleComponents != null)
{
IEnumerator enumerator = this.OleComponents.Values.GetEnumerator();
while (enumerator.MoveNext())
{
ComponentHashtableEntry current = (ComponentHashtableEntry) enumerator.Current;
flag4 |= current.component.FDoIdle(-1);
}
}
flag = trackingComponent.FContinueMessageLoop(reason, pvLoopData, null);
if (flag)
{
if (flag4)
{
System.Windows.Forms.UnsafeNativeMethods.MsgWaitForMultipleObjectsEx(0, IntPtr.Zero, 100, 0xff, 4);
}
else if (!System.Windows.Forms.UnsafeNativeMethods.PeekMessage(ref msg, System.Windows.Forms.NativeMethods.NullHandleRef, 0, 0, 0))
{
System.Windows.Forms.UnsafeNativeMethods.WaitMessage();
}
}
}
}
}
finally
{
this.currentState = currentState;
this.activeComponent = activeComponent;
}
Label_024C:
return !flag;
}
bool System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FOnComponentActivate(IntPtr dwComponentID)
{
int num = (int) ((long) dwComponentID);
ComponentHashtableEntry entry = (ComponentHashtableEntry) this.OleComponents[num];
if (entry == null)
{
return false;
}
this.activeComponent = entry.component;
return true;
}
bool System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FGetActiveComponent(int dwgac, System.Windows.Forms.UnsafeNativeMethods.IMsoComponent[] ppic, System.Windows.Forms.NativeMethods.MSOCRINFOSTRUCT info, int dwReserved)
{
System.Windows.Forms.UnsafeNativeMethods.IMsoComponent activeComponent = null;
if (dwgac == 0)
{
activeComponent = this.activeComponent;
}
else if (dwgac == 1)
{
activeComponent = this.trackingComponent;
}
else if (dwgac == 2)
{
if (this.trackingComponent != null)
{
activeComponent = this.trackingComponent;
}
else
{
activeComponent = this.activeComponent;
}
}
if (ppic != null)
{
ppic[0] = activeComponent;
}
if ((info != null) && (activeComponent != null))
{
foreach (ComponentHashtableEntry entry in this.OleComponents.Values)
{
if (entry.component == activeComponent)
{
info = entry.componentInfo;
break;
}
}
}
return (activeComponent != null);
}