I've been trying to place a jpg in a boxsizer as an update

wxPython Users
1

I have an application which displays a jpg in a BoxSizer(wx.HORIZONTAL) in a panel, and while I can get the first one in where I want it I don’t grok how to replace it with a different one when the user changes the other data. The data is coming from a sqlite db, with one of the fields of the row being a path and file name of the next jpg.

Can anyone point me in the correct direction on this?

Thanks,

Mark

2

In my case recently, I found that the GenStaticBitmap doesn’t seem to erase itself when you call SetBitmap more than once, so I made a simple subclass to take care of this for me, here’s a mostly-complete example:

import wx.lib.statbmp

import wx.lib.scrolledpanel as scrolled

class updateableBitmap(wx.lib.statbmp.GenStaticBitmap):

def OnPaint(self, event):

	wx.PaintDC(self).Clear()

	super(updateableBitmap, self).OnPaint(event)

class updateableBitmapFrame(wx.Frame):

def __init__(self):

	wx.Frame.__init__(self, None, -1, "View updateableBitmap")

	self.panel = scrolled.ScrolledPanel(self)

	img = wx.EmptyImage(1000,1000)

	self.imageCtrl = updateableBitmap(self.panel, wx.ID_ANY, wx.BitmapFromImage(img))

	self.sizer = wx.BoxSizer(wx.VERTICAL)

	self.sizer.AddF(self.imageCtrl, wx.SizerFlags(0).Expand())

	self.panel.SetSizer(self.sizer)

def updateBMP(self, bmp):

	self.imageCtrl.SetBitmap(bmp)

	self.panel.Layout()

	self.sizer.Layout()

	self.Refresh()
···

On Wednesday, October 29, 2014 5:51:41 PM UTC-7, Mark Halegua wrote:

I have an application which displays a jpg in a BoxSizer(wx.HORIZONTAL) in a panel, and while I can get the first one in where I want it I don’t grok how to replace it with a different one when the user changes the other data. The data is coming from a sqlite db, with one of the fields of the row being a path and file name of the next jpg.

Can anyone point me in the correct direction on this?

Thanks,

Mark

3

I think I solved this once by saving the sizer item that holds the
bitmap, calling the DestroyWindows method, creating thenew bitmap, and
attaching it to the sizer item.

There may be a cleaner way to do this.

···

On Thu, Oct 30, 2014 at 10:13 AM, Nathan McCorkle <nmz787@gmail.com> wrote:

In my case recently, I found that the GenStaticBitmap doesn't seem to erase
itself when you call SetBitmap more than once, so I made a simple subclass
to take care of this for me, here's a mostly-complete example:

import wx.lib.statbmp
import wx.lib.scrolledpanel as scrolled

class updateableBitmap(wx.lib.statbmp.GenStaticBitmap):
def OnPaint(self, event):
wx.PaintDC(self).Clear()
super(updateableBitmap, self).OnPaint(event)

class updateableBitmapFrame(wx.Frame):
def __init__(self):
wx.Frame.__init__(self, None, -1, "View updateableBitmap")
self.panel = scrolled.ScrolledPanel(self)
img = wx.EmptyImage(1000,1000)
self.imageCtrl = updateableBitmap(self.panel, wx.ID_ANY,
wx.BitmapFromImage(img))
self.sizer = wx.BoxSizer(wx.VERTICAL)
self.sizer.AddF(self.imageCtrl, wx.SizerFlags(0).Expand())
self.panel.SetSizer(self.sizer)
def updateBMP(self, bmp):
self.imageCtrl.SetBitmap(bmp)
self.panel.Layout()
self.sizer.Layout()
self.Refresh()

On Wednesday, October 29, 2014 5:51:41 PM UTC-7, Mark Halegua wrote:

I have an application which displays a jpg in a BoxSizer(wx.HORIZONTAL) in
a panel, and while I can get the first one in where I want it I don't grok
how to replace it with a different one when the user changes the other data.
The data is coming from a sqlite db, with one of the fields of the row being
a path and file name of the next jpg.

Can anyone point me in the correct direction on this?

Thanks,

Mark

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Josh English
Joshua.R.English@gmail.com
http://www.joshuarenglish.com