How to set size of wx.grid's columns expand to its parent?

[steve]

Hi,

I try to place a wx.grid on a panel, and make its columns expand to parent, but I get a white space on the right side of cells:

I do:

import wx.grid as gridlib

class SidePanelGrid(gridlib.Grid):
    def __init__(self, parent):
        gridlib.Grid.__init__(self, parent, -1, name="Side Panel Capacity Grid")
        self.CreateGrid(3,4)
        self.HideRowLabels()
        self.HideColLabels()
        self.ShowScrollbars(wx.SHOW_SB_NEVER,wx.SHOW_SB_NEVER)
        widt, heig =  self.GetSize()
        print "widt: ", widt
        for row in xrange(3):
            self.DisableRowResize(row)
            for col in xrange(4):
                self.SetCellAlignment(row, col, wx.ALIGN_CENTRE, wx.ALIGN_CENTRE)

        for col in xrange(4):
            self.SetColSize(col, (widt/4))
            self.DisableColResize(col)

self.my_grid = SidePanelGrid(self)

It doesn't work. What do I do wrong above?

[Nathan McCorkle]

We'll need to see more code.

[Nathan McCorkle]

Have you placed the grid in a sizer, and called yourPanel.SetSizer(yourSizer)?

On Thursday, July 17, 2014 2:01:17 PM UTC-7, steve wrote:

[steve]

I did:

self.mainSizer = wx.BoxSizer(wx.VERTICAL)
self.mainSizer.Add(self.my_grid, 0, wx.EXPAND|wx.GROW)
self.SetSizer(self.mainSizer)

[Mike Driscoll]

You don't set the size of the grid, so it's just using the minimum amount of size necessary. If you want a more accurate size, you would be better off changing that line to

self.GetTopLevelParent().GetSize()

This will get you a lot closer to what you want. When I tried it, the grid was actually wider than the screen and had scrollbars. I personally prefer that to the white background. If you want, you could set the size of the frame and use that size for your grid as well.

- Mike

[Mike Driscoll]

On Thursday, July 17, 2014 4:19:59 PM UTC-5, steve wrote:

I did:

self.mainSizer = wx.BoxSizer(wx.VERTICAL)
self.mainSizer.Add(self.my_grid, 0, wx.EXPAND|wx.GROW)
self.SetSizer(self.mainSizer)

wx.EXPAND is the same thing as wx.GROW.

- Mike

[steve]

But I set the size of each column to 1/4 of grid size (there are 4 columns), so why is there whitespace on the right side of the cells?

self.SetColSize(col, (widt/4))

[Mike Driscoll]

On Thursday, July 17, 2014 4:28:31 PM UTC-5, steve wrote:

But I set the size of each column to 1/4 of grid size (there are 4 columns), so why is there whitespace on the right side of the cells?

self.SetColSize(col, (widt/4))

Because the grid is expanding, but the columns are not. The columns don't expand when you change the size of your frame. If you want that to happen, you would have to catch EVT_SIZE and modify the grid's column sizes yourself.

Mike

[steve]

But the whitespace is there when I first start the application as well. I don't resize the window manually.

[Mike Driscoll]

On Thursday, July 17, 2014 4:45:15 PM UTC-5, steve wrote:

But the whitespace is there when I first start the application as well. I don't resize the window manually.

You told the grid to expand in the sizer. It is expanding to fit the width of the frame. That's why you see the whitespace.

Mike

[Werner]

Hi Steve,

On 7/17/2014 23:19, steve wrote:

I did:

self.mainSizer = wx.BoxSizer(wx.VERTICAL)
self.mainSizer.Add(self.my_grid, 0, wx.EXPAND|wx.GROW)

wx.GROW is alias of wx.EXPAND, don't know what happens if you use both at the same time, don't they negate each other?

wx.GROW
8192
wx.EXPAND
8192

Werner

[Tim Roberts]

Honestly, aren't they teaching you kids Boolean algebra in high school any more?  "|" is the logical "or" operator.  1|1 == 1.  In fact, for any x, x|x == x.

-- 
Tim Roberts, ti...@probo.com
Providenza & Boekelheide, Inc.

[Werner]

On 7/18/2014 17:59, Tim Roberts wrote:

Werner wrote:

Hi Steve,

On 7/17/2014 23:19, steve wrote:

I did:

self.mainSizer = wx.BoxSizer(wx.VERTICAL)
self.mainSizer.Add(self.my_grid, 0, wx.EXPAND|wx.GROW)

wx.GROW is alias of wx.EXPAND, don't know what happens if you use both at the same time, don't they negate each other?

wx.GROW
8192
wx.EXPAND
8192

Honestly, aren't they teaching you kids Boolean algebra in high school any more?  "|" is the logical "or" operator.  1|1 == 1.  In fact, for any x, x|x ==

Kids, not sure I qualify for that :-)  and no never had algebra but then I didn't do high school or the equivalent when I want to school back a little while ago ;-) ., ,, but I know I should one day maybe learn this stuff.

Werner

[Michael Moriarity]

On Fri, Jul 18, 2014 at 11:59 AM, Tim Roberts <ti...@probo.com> wrote:

Honestly, aren't they teaching you kids Boolean algebra in high school any more?  "|" is the logical "or" operator.  1|1 == 1.  In fact, for any x, x|x == x.

Well actually , Tim, "|" is the bitwise or operator; "or" is of course the logical or operator.

--
Best Regards,
Michael Moriarity