4D v13.4

LISTBOX Get rows height

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4D v13.4
LISTBOX Get rows height

LISTBOX Get rows height 


 

LISTBOX Get rows height ( {* ;} object {; unit} ) -> Function result 
Parameter Type   Description
Operator in If specified, object is an object name (string) If omitted, object is a variable
object  Form object in Object name (if * is specified) or Variable (if * is omitted)
unit  Longint in Unit of height value: 0 or omitted = pixels, 1 = lines
Function result  Integer in Row height

The LISTBOX Get rows height command returns the current row height for the list box object set using the object and * parameters.

If you pass the optional * parameter, you indicate that the object parameter is an object name (string). If you do not pass this parameter, you indicate that the object parameter is a variable. In this case, you pass a variable reference instead of a string. For more information about object names, refer to the Object Properties section.

By default, if you omit the unit parameter, the row height returned is expressed in pixels. To set another unit, in the unit parameter you can pass one of the following constants, found in the List Box theme:

Constant Type Value Comment
Listbox lines Longint 1 Height designates a number of lines. 4D calculates the height of a line according to the font
Listbox pixels Longint 0 Height is a number of pixels (default).

Note: For more information about calculating the height of rows, refer to the Design Reference manual.

 
PROPERTIES 

Product: 4D
Theme: List Box
Number: 836

 
INDEX

Alphabetical list of commands

 
HISTORY 

New
Created: 4D 2004
Renamed: 4D v12
Modified: 4D v13

 
SEE ALSO 

LISTBOX SET ROWS HEIGHT