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Try setting GlobalCEFApp.BackgroundColor before GlobalCEFApp.StartMainProcess
I've never tried it but this is what it's supposed to do as explained in the CEF3 sources ( /include/internal/cef_types.h )
Code: Select all
///
// Opaque background color used for accelerated content. By default the
// background color will be white. Only the RGB compontents of the specified
// value will be used. The alpha component must greater than 0 to enable use
// of the background color but will be otherwise ignored.
///