layout class

layout class Manages child widget geometry
Inherits
object
Description
The layout is a geometry management tool for child widgets. You create a layout, give it some widgets to manage and it will layout them automatically. The parent of the layout must be the widget for which child widget geometries have to be managed. A layout is a grid of NxM cells in which you insert child widgets with $addwidget(). Widgets that must span multiple cells can be added to the layout with $addmulticellwidget().
Functions
`$addWidget(<widget:object widget>,<row:uint>,<column:uint>)`
Adds a widget to this layout placing it at position <row>,<column> in the grid
`$addMultiCellWidget(<widget:object widget>,<start_row:uint>,<end_row:uint>,<start_col:uint>,<end_col:uint>)`
Adds a widget to this layout spanning multiple grid cells
`$setRowStretch(<row:uint>,<stretch:uint>)`
Sets the stretch value for a particular row of this layout. The <stretch_value> must be a positive integer. The rows with bigger stretch values will take more space in the layout.
`$setColumnStretch(<column:uint>,<stretch:uint>)`
Sets the stretch value for a particular column in this layout. The <stretch_value> must be a positive integer. The rows with bigger stretch values will take more space in the layout.
`$addRowSpacing(<row:uint>,<spacing:uint>)`
Sets the minimum height of the specified <row> to <spacing> which must be a positive integer
`$addColSpacing(<column:uint>,<spacing:uint>)`
Sets the minimum width of the specified <column> to <spacing> which must be a positive integer
`$setSpacing(<spacing:uint>)`
Sets the default spacing of the widgets in pixels
`$setMargin(<margin:uint>)`
Sets the dimension of the layout margin: the distance from the border to the outermost child widget edges.
`$setAlignment(<w:widget>, <flag1:string>, <flag2:string>, ...)`
Sets the alignment for widget w to flags, given as parameters. Valid flags are: Right, Left, Top, Bottom, HCenter, VCenter, Center
`$setResizeMode(<resize_mode:string>)`
Sets the resize mode of the parent widget in relation to this layout. <mode> can be one of:
     -Auto: this is the default
     -Fixed: the parent widget of this layout is resized to the "sizeHint" value and it cannot be resized by the user.
     -Minimum: the minimum size of the parent widget of this layout is set to minimumSize() and it cannot be smaller
     -FreeResize: the parent widget of this layout is not constrained at all

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