How does Windows change Aero Glass color?

aero, colors, dwm

Solution

The following methods should be of interest to you:

[DllImport("dwmapi.dll", EntryPoint = "#127", PreserveSig = false)]
public static extern void DwmGetColorizationParameters(out WDM_COLORIZATION_PARAMS parameters);
    
[DllImport("dwmapi.dll", EntryPoint = "#131", PreserveSig = false)]
public static extern void DwmSetColorizationParameters(WDM_COLORIZATION_PARAMS parameters, uint uUnknown);
    
public struct WDM_COLORIZATION_PARAMS {
    public uint Color1;
    public uint Color2;
    public uint Intensity;
    public uint Unknown1;
    public uint Unknown2;
    public uint Unknown3;
    public uint Opaque;
}

Make sure you make a call to `DwmIsCompositionEnabled` before calling the `DwmSetColorizationParameters` method or it will fail.

As you can see some of the arguments/properties are unknown. For more information, here is a link (in German)

Problem

I'm using Windows 7 RTM and I wonder how the control panel is able to update the Aero Glass color so smoothly without restarting the DWM (uxsms). DwmSetColorizationColor isn't working any more...

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