Function 3300h Get CTRL+C Check Flag

mov ax, 3300h ;Get CTRL+C Check Flag

int 21h

mov BreakFlag, dl ;0 = off, 1 = on

Get CTRL+C Check Flag (Function 3300h) returns the status of the MS-DOS CTRL+C check flag.

Parameters

This function has no parameters.

Return Value

The DL register contains 00h if checking is disabled, or the DL register contains 01h if checking is enabled.

Comment

If the CTRL+C check flag is off, MS-DOS checks for CTRL+C only while processing character I/O functions 01h through 0Ch. If the check flag is on, MS-DOS checks for CTRL+C while processing other system functions.

See Also

Function 3301h Set CTRL+C Check Flag