Is there any function (C++, MFC) to obtain window's background color?
Right click on desktop and choose 'personalize'. Under My Themes, choose High Contrast theme (pick any). Once that is done, below the themes is a Box that will say 'color' 'High Contrast'.
The default background color for windows is white.
You can also head to Settings > Personalization > Background and use the “Browse” button to find the wallpaper image on your system. You can download more free desktop backgrounds by visiting the Windows Themes section in the Microsoft Store.
To add background color in HTML, use the CSS background-color property. Set it to the color name or code you want and place it inside a style attribute. Then add this style attribute to an HTML element, like a table, heading, div, or span tag.
There's a default background color for windows, use GetSysColor(COLOR_WINDOW). But ultimately a window decides itself what is 'background' and what is 'foreground'. Affected by WNDCLASS.hbrBackground and the window's WM_ERASEBKGND and WM_PAINT message handlers. Anything is possible.
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