VDD_Get_Mod

The VDD_Get_Mod service returns changes in a virtual machine's video state. The changes are passed to the grabber in a buffer that includes a flag indicating what kind of changes occurred and what type of a memory change list follows. The flag is followed by a count of memory change-list entries and the change list itself.

This service returns cumulative changes until the VDD_Clear_Mod service is called.

Parameters

EDX

Specifies the system virtual machine handle.

EBX

Specifies the handle of the virtual machine for which to retrieve the change list.

EDI

Specifies the VDD control block pointer.

EBP

Points to the Client_Reg_Struc structure for the virtual machine.

Client_EBX

Specifies the virtual machine handle.

Client_ES

Specifies the selector identifying the segment containing the buffer to receive the change list.

Client_EDI

Specifies the address of the buffer to receive the change list.

Client_CX

Specifies the size of the buffer to receive the change list. This is for debugging purposes only.

Return Value

The Client_CX register contains the size of structure returned by the service (for debugging purposes only). The service returns zero to indicate an error.

Uses

Client_CX, Flags