Function 71, subfunction 1 - set window caption.
Parameters:
- eax = 71 - function number
- ebx = 1 - subfunction number
- ecx = pointer to caption string
Returned value:
- function does not return value
Remarks:
- String must be in the ASCIIZ-format. Disregarding real string
length, no more than 255 characters are drawn.
- Pass NULL in ecx to remove caption.