In this article, we will deal with the main issues relating to this process and also consider some problems that may arise with it. Desire to better understand system Programs Misses to find out what kind of DWM.exe process? What functions and tasks does it perform? These messages can be used to monitor changes such as composition state changes and system color theme changes.In Task Manager Windows Users DWM.exe process can detect. The following messages provide notification of DWM events. You can set transition behavior by using DWMWA_TRANSITIONS_FORCEDISABLED as the dwAttribute parameter. In addition to controlling the non-client area rendering, DwmSetWindowAttribute can also control DWM transition effects.
Disable non-client area rendering on the window.
HRESULT DisableNCRendering(HWND hWnd)ĭWMNCRENDERINGPOLICY ncrp = DWMNCRP_DISABLED This causes any previous calls to DwmEnableBlurBehindWindow or to DwmExtendFrameIntoClientArea to be disabled. This next example disables non-client area rendering. That function also determines how your application should handle DWM transition effects. The cbAttribute parameter contains the size, in bytes, of that object.ĭwmSetWindowAttribute enables your application to set the non-client area rendering policy. The DWMWINDOWATTRIBUTE enumeration topic indicates, in the row for each flag, what type of value you should pass a pointer to in the pvAttribute parameter for DwmGetWindowAttribute. HRESULT hr = ::DwmGetWindowAttribute(hWnd,įollow the same programming pattern shown above when you call DwmGetWindowAttribute with flags for different attributes. This example demonstrates how to handle the color changed message and access the new color.ĭWORD newColorizationColor To access this colorization value, and monitor the color change, use the DwmGetColorizationColor function and the WM_DWMCOLORIZATIONCOLORCHANGED message. The colorization value is provided through the DWM APIs to enable your application to match client UI with the system color theme. The color of the non-client region of a window is determined by the current system color theme. Additionally, you can set and query the rendering policy for different DWM window attributes.
These APIs enable you to query and change the composition state. The Desktop Window Manager (DWM) composition APIs provide several functions for setting and querying for basic information that is used by the DWM.
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