c# - Non client painting on aero glass window -

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now im customizing title bar of application. aim add 1 button on title bar. im previous question people have adviced me way can customize non client area. thats works except 1 small thing - glowing! can draw glowing in nonclient area i cannot make spreads out of window. cant find resource subj.

i looked this sample , made own test app investigating non client drawing facilities. screen shot of app's window:

my app's window

so can see system button glows out of windows when clipped borderframe.

for example, skype's window have 4 custom buttons in title bar , can "glow" out of window frame:

skype's window

can advise me find out way draw button's glowing out of window?
in advance!

[edit]
thank answers!

skype cheats it, , has little sliver along top of window; can draw it.

you can see process explorer spyxx:

enter image description here

see also

msdn: custom window frame using dwm


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