# wx.FlexGridSizer¶

A flex grid sizer is a sizer which lays out its children in a two-dimensional table with all table fields in one row having the same height and all fields in one column having the same width, but all rows or all columns are not necessarily the same height or width as in the wx.GridSizer.

Since wxWidgets 2.5.0, wx.FlexGridSizer can also size items equally in one direction but unequally (“flexibly”) in the other. If the sizer is only flexible in one direction (this can be changed using wx.FlexGridSizer.SetFlexibleDirection ), it needs to be decided how the sizer should grow in the other (“non-flexible”) direction in order to fill the available space. The wx.FlexGridSizer.SetNonFlexibleGrowMode method serves this purpose.

## Class Hierarchy¶

Inheritance diagram for class FlexGridSizer:

wx.GridBagSizer

## Methods Summary¶

 __init__ wx.FlexGridSizer constructors. AddGrowableCol Specifies that column idx (starting from zero) should be grown if there is extra space available to the sizer. AddGrowableRow Specifies that row idx (starting from zero) should be grown if there is extra space available to the sizer. CalcMin This method is abstract and has to be overwritten by any derived class. GetColWidths Returns a read-only array containing the widths of the columns in the sizer. GetFlexibleDirection Returns a wx.Orientation value that specifies whether the sizer flexibly resizes its columns, rows, or both (default). GetNonFlexibleGrowMode Returns the value that specifies how the sizer grows in the “non-flexible” direction if there is one. GetRowHeights Returns a read-only array containing the heights of the rows in the sizer. IsColGrowable Returns True if column idx is growable. IsRowGrowable Returns True if row idx is growable. RemoveGrowableCol Specifies that the idx column index is no longer growable. RemoveGrowableRow Specifies that the idx row index is no longer growable. RepositionChildren Method which must be overridden in the derived sizer classes. SetFlexibleDirection Specifies whether the sizer should flexibly resize its columns, rows, or both. SetNonFlexibleGrowMode Specifies how the sizer should grow in the non-flexible direction if there is one (so SetFlexibleDirection must have been called previously).

## Class API¶

class wx.FlexGridSizer(GridSizer)

Possible constructors:

FlexGridSizer(cols, vgap, hgap)

FlexGridSizer(cols, gap=Size(0,0))

FlexGridSizer(rows, cols, vgap, hgap)

FlexGridSizer(rows, cols, gap)


A flex grid sizer is a sizer which lays out its children in a two- dimensional table with all table fields in one row having the same height and all fields in one column having the same width, but all rows or all columns are not necessarily the same height or width as in the GridSizer.

### Methods¶

__init__(self, *args, **kw)

wx.FlexGridSizer constructors.

Please see GridSizer.__init__ documentation.

New in version 2.9.1: (except for the four argument overload)

__init__ (self, cols, vgap, hgap)

Parameters
• cols (int) –

• vgap (int) –

• hgap (int) –

__init__ (self, cols, gap=Size(0,0))

Parameters

__init__ (self, rows, cols, vgap, hgap)

Parameters
• rows (int) –

• cols (int) –

• vgap (int) –

• hgap (int) –

__init__ (self, rows, cols, gap)

Parameters
• rows (int) –

• cols (int) –

• gap (wx.Size) –

AddGrowableCol(self, idx, proportion=0)

Specifies that column idx (starting from zero) should be grown if there is extra space available to the sizer.

The proportion parameter has the same meaning as the stretch factor for the sizers (see wx.BoxSizer) except that if all proportions are 0, then all columns are resized equally (instead of not being resized at all).

Notice that the column must not be already growable, if you need to change the proportion you must call RemoveGrowableCol first and then make it growable (with a different proportion) again. You can use IsColGrowable to check whether a column is already growable.

Parameters
• idx (int) –

• proportion (int) –

AddGrowableRow(self, idx, proportion=0)

Specifies that row idx (starting from zero) should be grown if there is extra space available to the sizer.

This is identical to AddGrowableCol except that it works with rows and not columns.

Parameters
• idx (int) –

• proportion (int) –

CalcMin(self)

This method is abstract and has to be overwritten by any derived class.

Here, the sizer will do the actual calculation of its children’s minimal sizes.

Return type

wx.Size

GetColWidths(self)

Returns a read-only array containing the widths of the columns in the sizer.

Return type

list of integers

GetFlexibleDirection(self)

Returns a wx.Orientation value that specifies whether the sizer flexibly resizes its columns, rows, or both (default).

Return type

int

Returns

One of the following values:

• wx.VERTICAL: Rows are flexibly sized.

• wx.HORIZONTAL: Columns are flexibly sized.

• wx.BOTH: Both rows and columns are flexibly sized (this is the default value).

GetNonFlexibleGrowMode(self)

Returns the value that specifies how the sizer grows in the “non-flexible” direction if there is one.

The behaviour of the elements in the flexible direction (i.e. both rows and columns by default, or rows only if GetFlexibleDirection is VERTICAL or columns only if it is HORIZONTAL ) is always governed by their proportion as specified in the call to AddGrowableRow or AddGrowableCol . What happens in the other direction depends on the value of returned by this function as described below.

Return type

wx.FlexSizerGrowMode

Returns

One of the following values:

• wx.FLEX_GROWMODE_NONE: Sizer doesn’t grow its elements at all in the non-flexible direction.

• wx.FLEX_GROWMODE_SPECIFIED: Sizer honors growable columns/rows set with AddGrowableCol and AddGrowableRow in the non-flexible direction as well. In this case equal sizing applies to minimum sizes of columns or rows (this is the default value).

• wx.FLEX_GROWMODE_ALL: Sizer equally stretches all columns or rows in the non-flexible direction, independently of the proportions applied in the flexible direction.

GetRowHeights(self)

Returns a read-only array containing the heights of the rows in the sizer.

Return type

list of integers

IsColGrowable(self, idx)

Returns True if column idx is growable.

Parameters

idx (int) –

Return type

bool

New in version 2.9.0.

IsRowGrowable(self, idx)

Returns True if row idx is growable.

Parameters

idx (int) –

Return type

bool

New in version 2.9.0.

RemoveGrowableCol(self, idx)

Specifies that the idx column index is no longer growable.

Parameters

idx (int) –

RemoveGrowableRow(self, idx)

Specifies that the idx row index is no longer growable.

Parameters

idx (int) –

RepositionChildren(self, minSize)

Method which must be overridden in the derived sizer classes.

The implementation should reposition the children using the current total size available to the sizer ( m_size ) and the size computed by the last call to CalcMin .

Parameters

minSize (wx.Size) –

New in version 3.1.3,: before this version RecalcSizes() method not taking any arguments had to be overridden in the derived classes instead.

SetFlexibleDirection(self, direction)

Specifies whether the sizer should flexibly resize its columns, rows, or both.

Argument direction can be VERTICAL , HORIZONTAL or BOTH (which is the default value). Any other value is ignored.

See GetFlexibleDirection for the explanation of these values. Note that this method does not trigger relayout.

Parameters

direction (int) –

SetNonFlexibleGrowMode(self, mode)

Specifies how the sizer should grow in the non-flexible direction if there is one (so SetFlexibleDirection must have been called previously).

Argument mode can be one of those documented in GetNonFlexibleGrowMode , please see there for their explanation. Note that this method does not trigger relayout.

Parameters

mode (FlexSizerGrowMode) –

### Properties¶

ColWidths

FlexibleDirection

NonFlexibleGrowMode

RowHeights