_HEIGHT - QB64 Wiki


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The _HEIGHT function returns the height of an image handle or current write page.



result& = _HEIGHT[(imageHandle&)]


  • If imageHandle& is omitted, it's assumed to be the handle of the current write page.
  • To get the width of the current program window use zero for the handle value: depth& = _HEIGHT(0)
  • If the image specified by imageHandle& is in text mode, the number of characters per column is returned.
  • If the image specified by imageHandle& is in graphics mode, the number of pixels per column is returned.
  • If imageHandle& is an invalid handle, then an invalid handle error will occur.
  • The maximum pixel coordinate of a program screen is one less than what the function returns.

Example: Displays the current program window area.

SCREEN 12 wide = _WIDTH deep = _HEIGHT PRINT "The program screen is"; wide; "X"; deep

See also

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