[Screen Ruler] Fix possible crash in CaptureSingleFrame (#20275)

microsoft · Sep 5, 2022 · feead9c · feead9c
1 parent 5d4b365
commit feead9c
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/modules/MeasureTool/MeasureToolCore/ScreenCapturing.cpp b/src/modules/MeasureTool/MeasureToolCore/ScreenCapturing.cpp
@@ -263,7 +263,7 @@ MappedTextureView D3DCaptureState::CaptureSingleFrame()
     wil::shared_event frameArrivedEvent(wil::EventOptions::ManualReset);
 
     frameCallback = [frameArrivedEvent, &result, this](MappedTextureView tex) {
-        if (result)
+        if (frameArrivedEvent.is_signaled())
             return;
 
         StopCapture();