something I found that might help GDI hackers

Jonathan Wilson jonwil at
Wed Sep 10 10:01:33 CDT 2003

struct GDIHandleBitFields {
	unsigned long Index:0:10;
	unsigned long Type:10:5;
	unsigned long AltType:15:2;
	unsigned long Stock:17:1;
	unsigned long Unique:18:8;

This might help people trying to understand the inner workings of GDI...
Its current as of windows XP SP1.

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