Fix #3437: InvalidOperationException when right-clicking on popupTooltip.

siegfriedpammer · siegfriedpammer · commit 247f161eb35b · 2025-03-29T21:39:52.000+01:00
diff --git a/ILSpy/TextView/DecompilerTextView.cs b/ILSpy/TextView/DecompilerTextView.cs
@@ -341,7 +341,7 @@ void TextViewMouseHoverStopped(object sender, MouseEventArgs e)
 
 		void TextEditorMouseMove(object sender, MouseEventArgs e)
 		{
-			if (popupToolTip != null)
+			if (popupToolTip != null && PresentationSource.FromVisual(popupToolTip.Child) != null)
 			{
 				double distanceToPopup = GetDistanceToPopup(e);
 				if (distanceToPopup > distanceToPopupLimit)

Original file line number	Diff line number	Diff line change
`@@ -341,7 +341,7 @@ void TextViewMouseHoverStopped(object sender, MouseEventArgs e)`
`341`	`341`
`342`	`342`	`void TextEditorMouseMove(object sender, MouseEventArgs e)`
`343`	`343`	`{`
`344`		`- if (popupToolTip != null)`
	`344`	`+ if (popupToolTip != null && PresentationSource.FromVisual(popupToolTip.Child) != null)`
`345`	`345`	`{`
`346`	`346`	`double distanceToPopup = GetDistanceToPopup(e);`
`347`	`347`	`if (distanceToPopup > distanceToPopupLimit)`