EVALUATION

Looking through older native applications I cannot find a case where there is a toolbar button that has text. It's always a 16x16 px icon.  However we support toolbar buttons with text and previously showed the text in disabled buttons with a different color than enabled text (eg: gray instead of black). Right now the button text will not look disabled, which is why this is a regression.  I can build a new app in a recent version of Visual Studio that does have a disabled button, but I can't figure out where they are getting the color from. A new app may be using .NET controls instead of win32, however, which might explain the discrepancy.  The best way to handle this is to use the non-toolbar button disabled text in the case where a toolbar button's disabled and enabled colors are the same (usually meaning the disabled color isn't defined and it's just coming from higher up the cascade).
                                     

EVALUATION

I'm having some difficulty finding native equivalents to a toolbar toggle button with disabled text.  The standard Explorer window has a disabled button, but Explorer is also known to break MS's own guidelines and use custom components.  Strangely, StyleBuilder doesn't report a disabled state for toolbar buttons, so perhaps it would make sense to special case this to use the disabled state of normal buttons to draw text?