Fixed a crash issue

rpwang17 · rpwang17 · commit b598e6ed42aa · 2023-03-16T12:25:28.000-04:00
diff --git a/freeview/RenderView3D.cpp b/freeview/RenderView3D.cpp
@@ -553,7 +553,7 @@ void RenderView3D::DoUpdateRASPosition( int posX, int posY, bool bCursor, bool b
       picker->GetPickPosition( pos );
       prop = picker->GetViewProp();
       LayerMRI* mri_sel = (LayerMRI*)lc_mri->HasProp(prop);
-      if (mri_sel->GetProperty()->GetShowAsContour())
+      if (mri_sel && mri_sel->GetProperty()->GetShowAsContour())
       {
         lc_mri->SetCursorRASPosition( pos );
         MainWindow::GetMainWindow()->SetSlicePosition( pos );

Original file line number	Diff line number	Diff line change
`@@ -553,7 +553,7 @@ void RenderView3D::DoUpdateRASPosition( int posX, int posY, bool bCursor, bool b`
`553`	`553`	`picker->GetPickPosition( pos );`
`554`	`554`	`prop = picker->GetViewProp();`
`555`	`555`	`LayerMRI* mri_sel = (LayerMRI*)lc_mri->HasProp(prop);`
`556`		`- if (mri_sel->GetProperty()->GetShowAsContour())`
	`556`	`+ if (mri_sel && mri_sel->GetProperty()->GetShowAsContour())`
`557`	`557`	`{`
`558`	`558`	`lc_mri->SetCursorRASPosition( pos );`
`559`	`559`	`MainWindow::GetMainWindow()->SetSlicePosition( pos );`