I have to convert a hexadecimal number to decimal, but don't know how. In the AutoIt documentation (pictured below) some constants (being assigned hexadecimal values) are defined:

0x00200000 hexadecimal (underlined in image) equals 8192 decimal (this is the true conversion). But convertors return 2097152. I have to convert another hex value (0x00000200), but convertors get it wrong. How to correctly convert it?
When I use the definition $WS_EX_CLIENTEDGE (or a hexadecimal value), it doesn't work. If I use an integer I believe it will work.