Int 15/AH=12h/BH=0Bh

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TopView - SEND MESSAGE - SUBFROM - SEND MAILBOX MESSAGE/STAT BY REF

AH = 12h
BH = 0Bh
BL = mailbox to write to
00h handle is DWORD on top of stack
02h default mailbox of task whose handle is on top of stack
03h current task's default mailbox.

STACK:
DWORD status (low byte) DWORD length of message DWORD address of message

Return:
STACK popped

Notes: Only a pointer to the message is stored, but the write may still fail due to insufficient memory. Under DV 2.2+, failed mailbox writes may return CF set (see AX=DE15h)

See Also: AH=12h/BH=0Ah"MAILBOX"

Category: DESQview/TopView and Quarterdeck Programs - Int 15h - T

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