wxPython - GridSizer

As the name suggests, a GridSizer object presents a two dimensional grid. Controls are added in the grid slot in the left-to-right and top-to-bottom order. GridSizer object takes four parameters −

wx.GridSizer(rows, columns, vgap, hgap)

vgap and hgap parameters control vertical and horizontal spacing between the adjacent controls.

Following table shows some important methods of wxGridSizer class −

S.N.	Methods & Description
1	Add() Adds a control in the next available grid slot
2	AddMany() Adds each item in the list of controls
3	SetRows() Sets the number of rows in the sizer
4	GetRows() Retrieves the number of rows in the sizer
5	SetCols() Sets the number of columns in the sizer
6	GetCols() Retrieves the number of columns in size
7	SetVGap() Sets vertical gap (in pixels) between the cells
8	GetVGap() Returns the value of vgap between the cells
9	SetHGap() Sets the horizontal gap (in pixels) between the cells
10	GetHGap() Returns the value of hgap between the cells

The following code demonstrates a simple gridsizer of a 4 by 4 grid with vertical and horizontal gap of 5 pixels.

Gs = wx.GridSizer(4, 4, 5, 5)

Sixteen button objects are successively added using a ‘for’ loop.

for i in range(1,17): 
   btn = "Btn"+str(i) 
   gs.Add(wx.Button(p,label = btn),0,wx.EXPAND)

The complete code is as follows −

import wx
  
class Example(wx.Frame): 
   
   def __init__(self, parent, title): 
      super(Example, self).__init__(parent, title = title,size = (300,200)) 
             
      self.InitUI() 
      self.Centre() 
      self.Show()      
         
   def InitUI(self): 
	
      p = wx.Panel(self) 
         
      gs = wx.GridSizer(4, 4, 5, 5) 
		
      for i in range(1,17): 
         btn = "Btn"+str(i) 
         gs.Add(wx.Button(p,label = btn),0,wx.EXPAND) 

         p.SetSizer(gs)  
   
app = wx.App() 
Example(None, title = 'Grid demo') 
app.MainLoop()

The above code produces the following output −

wxpython_layout_management.htm