READ EVENTS | Hackers Guide to Visual FoxPro 7.0

MaxHeight, MaxLeft, MaxTop, MaxWidth, MinHeight, MinWidth

Specifies how large or small a form window can be sized and where it can be placed.

Usage

nHowTall = objForm.MaxHeight nHowWide = objForm.MaxWidth nHowShort = objForm.MinHeight nHowThin = objForm.MinWidth objForm.MaxHeight = nHowTall objForm.MaxWidth = nHowWide objForm.MinHeight = nHowShort objForm.MinWidth = nHowThin

The MaxHeight and MaxWidth properties specify the maximum dimensions to which a form can be stretched. This stretching can occur via operator action by resizing the window with mouse or keyboard, or programmatically (using ZOOM WINDOW, or by changing WindowState, Height or Width). MinHeight and MinWidth specify the minimum dimensions the form can assume. The "minimized" or "iconized" state is not affected by the Min-dimensions; only resizing using the mouse or keyboard, or by changing the form's Height and Width, is affected.

Usage

nColumn = objForm.MaxLeft  nRow = objForm.MaxTop objForm.MaxLeft = nColumn objForm.MaxTop = nRow

MaxLeft and MaxTop, on the other hand, specify the position a form should have when maximized. When the form is maximized, it is not movable, nor can it be resized using the mouse or keyboard. While all the other "Max" properties are the maximum value within a range of values that a particular property can have, the MaxTop and MaxLeft are the only values their properties can have when the form is maximized. We think this is an unfortunate overloading of the prefix, and bound to lead to confusion.

All of these properties respect, and are scaled to, the appropriate ScaleMode.

Example

oForm = CREATEOBJECT("TestForm") oForm.Show()   DEFINE CLASS TestForm AS Form   #INCLUDE FOXPRO.H   ScaleMode = SCALEMODE_PIXELS   Top = 10   Left = 10   Height = 100   Width = 100   MaxHeight = 200   MaxWidth = 200   MaxTop = 15   MaxLeft = 15   MinHeight = 50   MinWidth = 50 ENDDEFINE