isnt this a default dwExStyle? it doesnt say in the msdn.
I would cautiously say 'no' to your question. In the PSDK headers, WS_EX_WINDOWEDGE is defined like this:
so, in other words, it's value is not zero, which means for this to be the default, the API would have to specifically assume that value, and in my experience it has been very rare for important stuff like this to get missed out in the msdn doco (they tend to just "forget" the "minor" stuff that they don't want you to know about).
#define WS_EX_WINDOWEDGE 0x00000100L
so, in other words, it's value is not zero, which means for this to be the default, the API would have to specifically assume that value, and in my experience it has been very rare for important stuff like this to get missed out in the msdn doco (they tend to just "forget" the "minor" stuff that they don't want you to know about).