# GX_IsHBlank

## Syntax

      #include <nitro/gx/gx.h>

      s32 GX_IsHBlank();

## Arguments

None.

## Return Values

Not in H-Blank period (0), or in H-Blank period (other than 0).

## Description

This function determines whether the program is in H-Blank period. It returns a value other than 0 when in the H-Blank period; it returns 0 when not in the H-Blank period.

## See Also

`GX_HBlankIntr`, `GX_IsVBlank`

## Revision History

2004/01/19 Initial version.

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