DisplayFusion RSS: Getting troubles when switch from extend to duplicate mode https://www.displayfusion.com/Discussions/RSS/?TopicID=01967aa9-29e2-7593-967a-3c25107b904f DisplayFusion RSS: Getting troubles when switch from extend to duplicate mode Sat, 02 May 2026 02:42:13 GMT en hourly 1 https://www.displayfusion.com/Discussions/RSS/?TopicID=01967aa9-29e2-7593-967a-3c25107b904f RE: Getting troubles when switch from extend to duplicate mode https://www.displayfusion.com/Discussions/View/getting-troubles-when-switch-from-extend-to-duplicate-mode/?ID=01967aa9-29e2-7593-967a-3c25107b904f#3 Tue, 29 Apr 2025 03:38:35 GMT Binary Fortress Software https://www.displayfusion.com/Discussions/View/getting-troubles-when-switch-from-extend-to-duplicate-mode/?ID=01967aa9-29e2-7593-967a-3c25107b904f#3 DisplayFusion Thank you very much. ]]> RE: Getting troubles when switch from extend to duplicate mode https://www.displayfusion.com/Discussions/View/getting-troubles-when-switch-from-extend-to-duplicate-mode/?ID=01967aa9-29e2-7593-967a-3c25107b904f#2 Mon, 28 Apr 2025 17:29:35 GMT Binary Fortress Software https://www.displayfusion.com/Discussions/View/getting-troubles-when-switch-from-extend-to-duplicate-mode/?ID=01967aa9-29e2-7593-967a-3c25107b904f#2 DisplayFusion Unfortuantely there's not much we can do there, the Windows API handles that, and it needs to match the resolutions to clone.

Sorry! ]]> Getting troubles when switch from extend to duplicate mode https://www.displayfusion.com/Discussions/View/getting-troubles-when-switch-from-extend-to-duplicate-mode/?ID=01967aa9-29e2-7593-967a-3c25107b904f Mon, 28 Apr 2025 04:30:29 GMT Binary Fortress Software https://www.displayfusion.com/Discussions/View/getting-troubles-when-switch-from-extend-to-duplicate-mode/?ID=01967aa9-29e2-7593-967a-3c25107b904f DisplayFusion My PC connected to 2 monitors with different display resolutions: 1366x768 (main) and 1280x800. It is always running a WPF app with maximized. I want the second monitor will show an image or video in normal condition, but it can mirror some windows of WPF if I determined.

Therefore I tried to use display mode of windows to switch between extend and duplicate mode. But the resolution of main screen is changed after switching to duplicate mode. Also, the main screen display black screen during the transition.

Are there any solution to solve this problem? ]]>