Handle transient GDI+ ExternalException in SplitContainer.RepaintSplitterRect during display-session transition#14565

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LeafShi1:Fix_14562_GDI+_Exception_drawing_SplitContainer

Azure Pipelines / dotnet-winforms CI succeeded May 28, 2026 in 17m 1s

Build #20260527.8 had test failures

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Other: 410 (0.37%)
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Check failure on line 1 in Microsoft.VisualBasic.Forms.Tests.WindowsFormsApplicationBaseTests.ShowHideSplashScreenSuccess

azure-pipelines / dotnet-winforms CI

Microsoft.VisualBasic.Forms.Tests.WindowsFormsApplicationBaseTests.ShowHideSplashScreenSuccess

System.InvalidOperationException : Value Dispose() cannot be called while doing CreateHandle().

Raw output


               at System.Windows.Forms.Control.Dispose(Boolean disposing) in /_/src/System.Windows.Forms/System/Windows/Forms/Control.cs:line 4802
   at System.Windows.Forms.ContainerControl.Dispose(Boolean disposing) in /_/src/System.Windows.Forms/System/Windows/Forms/Layout/Containers/ContainerControl.cs:line 598
   at System.Windows.Forms.Form.Dispose(Boolean disposing) in /_/src/System.Windows.Forms/System/Windows/Forms/Form.cs:line 3557
   at System.ComponentModel.Component.Dispose()
   at Microsoft.VisualBasic.Forms.Tests.WindowsFormsApplicationBaseTests.ShowHideSplashScreenSuccess() in /_/src/Microsoft.VisualBasic.Forms/tests/UnitTests/System/Windows/Forms/WindowsFormsApplicationBaseTests.vb:line 127
   at Microsoft.VisualBasic.Forms.Tests.WindowsFormsApplicationBaseTests.ShowHideSplashScreenSuccess() in /_/src/Microsoft.VisualBasic.Forms/tests/UnitTests/System/Windows/Forms/WindowsFormsApplicationBaseTests.vb:line 119
   at System.Reflection.MethodBaseInvoker.InterpretedInvoke_Method(Object obj, IntPtr* args)
   at System.Reflection.MethodBaseInvoker.InvokeWithNoArgs(Object obj, BindingFlags invokeAttr)

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