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Calling a drawing method stores the indicated content in some internal format but does not alter the screen. WPF operates in retained mode (as does JavaFX, not tested here). To explain what that means, here’s a quick overview of how WPF shows things on the screen. This is because two different threads collaborate in this task. Measuring WPF PerformanceĪttempting to measure the time WPF takes to fully render a window is surprisingly difficult. This post is largely unrelated to the following discussion, but it’s a fascinating examination of WPF performance at the lowest level.

Test Conclusions drawn from these resultsīefore moving on, I’d like to recommend Jeremiah Morrill’s Critical Deep Dive into the WPF Rendering System.

Sample Test Results for various configurations on my systems.

#Windows xp background line drawing download#

Drawing Test Application with documentation and download.Measuring WPF Performance, a rather tricky procedure.

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The test application and its source code are available for download, so you can run your own tests and modify the test cases as desired. Hopefully the results will prove useful to other developers. For comparison, I implemented the same operations in Java’s AWT (Abstract Window Toolkit).

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On this page I attempt to measure the performance of simple drawing operations in both WPF and Windows Forms (i.e. Certainly, developers outside Microsoft have frequently criticized WPF for its sluggish performance, especially compared to GDI/GDI+ on Windows XP. Rumor has it that Vista was originally intended to use WPF for its entire GUI, but the performance of the new API was not up to the task. The DWM is enabled by switching to the Aero desktop theme (the default on most editions), and disabled by switching to the Basic theme which emulates Windows XP. WPF was developed for Windows Vista whose new Desktop Window Manager (DWM) is likewise based on DirectX rather than GDI. Windows Presentation Foundation (WPF) is based on DirectX and exposed exclusively through managed. The original interface languages for GDI and GDI+ are C and C++, respectively. Windows Forms wraps the GDI+ API introduced in Windows XP, which in turn extends the GDI (Graphics Device Interface) API that dates back to the first versions of Windows. NET Framework provides two incompatible and unrelated graphics APIs, both aimed at general GUI application development: