_strupr

include vmm.inc

VMMCall _strupr, <OFFSET32 psz>
 

Converts any lowercase characters in the specified string to uppercase. Uses the C calling convention. Uses EAX, ECX, EDX, and Flags.

• Returns, in EAX, the address of the converted string.

psz

Address of string to convert.

Unlike some other string functions, this service resides in pageable memory. It must only be called when pageable code can be executed.

Until the INIT_COMPLETE phase of VxD initialization, this service will not correctly convert case for non-US English languages. A VxD should delay all calls to this function until the INIT_COMPLETE phase of VxD initialization.