Int 2F/AX=DE01h/BX=5242h

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DESQview v2.26+ XDI - CUSTOM SUBFUNCTION, Ralf Brown's XDI drivers

AX = DE01h
BX = 5242h ("RB")
CX:DX = program identifier
656F7000h ("eop",0) for DVeop

Return:
AX = 5242h ("RB") if installed ES:BX -> data or entry point (see #03100) CX = version number (CH = major, CL = minor)

(Table 03100) Call DVeop entry point with: ES:DI -> callback address or 0000h:0000h to remove callback

Return:
AX = status 0000h failed (callback table full or attempted to remove non- existent callback) 0001h successful ES:DI -> chaining address BX,CX,DX destroyed

Notes: The callback function is called with a simulated interrupt when the DESQview window containing it is closed; it should perform all necessary cleanup and then perform a FAR jump to the chaining address or an IRET if the chaining address is 0000h:0000h. If the program wishes to remove itself before the window is closed, it should call the DVeop entry point with the previously returned chaining address and ignore the returned chaining address.

Category: Resident Utilities - Int 2Fh - D

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