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Using DWORD flags

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I''ve seen a lot of functions that work like this function( FLAG1 | FLAG2 | FLAG3 ); int function( DWORD flags ) { //blah } How do you check the DWORD for certain flags?

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Like this:
  
DWORD a;
a = FLAG1 | FLAG2;
if (a & FLAG1)
{
//It has FLAG1 in it

}
if (a & FLAG2)
{
//It has FLAG2 in it

}

Hope this helps

---------------

I finally got it all together...
...and then forgot where I put it.

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