Definition: |
include pGUI.e
Ihandle identifier |
Description: |
Type. An integer > 0.
Use this to define interface element variables. It is probably unwise to use this to determine whether an object is an Ihandle, as many things which are clearly not (eg 1, 5000, 'X') will pass. Note that assigning NULL to a variable declared as an Ihandle will trigger a typecheck. Some routines accept or yield an Ihandle or NULL; for such cases the type Ihandln (an integer >= 0) is provided. Some routines can accept an Ihandle or a sequence of Ihandle, for which the type Ihandles is provided - with null(s) prohibited and the empty sequence permitted. |
Example: |
include pGUI.e Ihandle quit_bt = IupButton("Quit") |
See Also: | IupButton |