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Tkinter Text Widget: Multiline Blinking Caret For Box-Select

I've created a box-select feature for tk.Text. The widget gets the font height and concocts an .xbm image from it. The .xbm is used as a faux-caret, via image_create, for all selected lines except the line the real caret is on.
How do I make the faux-caret image instance(s) blink in time with the real caret?
or
What is another direction I can go to get these results?

My solution was to get rid of the real caret visibly, draw a faux caret on every line, and then call a function that keeps swapping out an 'on' faux-caret with an 'off' faux-caret. Below are some relevant code snippets. Note: I actually have 3 faux-carets because I want the caret that is on the true active line to be a little darker.
#FAUX-CARET
#concoct, load, assign, and delete xbm for faux-caret
def __loadcarets(self) -> None:
#store insert on/off times for faux-caret `.after` calls
self.__instime = (self['insertofftime'], self['insertontime'])
fh = self.__fh #font height from 'linespace'
#make a temp xbm file
with tempfile.NamedTemporaryFile(mode='w+b', suffix='.xbm', delete=False) as f:
#create prettyprint xbm data
xbmdata = ',\n\t'.join(','.join('0xFF' for _ in range(min(8, fh-(8*i)))) for i in range(math.ceil(fh/8)))
#write xbm
f.write((f"#define image_width {INSWIDTH}\n#define image_height {fh}\n"
"static unsigned char image_bits[] = {\n\t"
f'{xbmdata}}};').encode())
#load xbm files for faux-caret ~ they have to be in this order
#I gave this a placeholder name because you should never have to access this directly
#__fauxcaret does everything
self.__ = (tk.BitmapImage(file=f.name, foreground='#999999'), #shadow caret
tk.BitmapImage(file=f.name, foreground=self['background']), #off caret
tk.BitmapImage(file=f.name, foreground=self['insertbackground'])) #main caret
#delete file
os.unlink(f.name)
#faux-caret create or config
def __fauxcaret(self, index:str, on:bool=True, main:bool=False, cfg:bool=False) -> None:
(self.image_create, self.image_configure)[cfg](index, image=self.__[(main<<on)|(on^1)])
#blink the faux-caret(s)
def __blink(self, on:bool=True):
#nothing to do
if not self.__boxselect: return
#so we only do this once per first blink
if not self.__blinksrt:
#sort image indexes
self.__blinksrt = sorted((self.index(n) for n in self.image_names()), key=float)
if idx:=self.__blinksrt:
#flip `on`
on = not on
#consider direction in forward perspective
fw = not self.__lbounds.rv
#reconfigure all carets
for i in idx: self.__fauxcaret(i, on=on, cfg=True)
#reconfigure "active line" caret, if off it will assign off again
self.__fauxcaret(idx[-fw], on=on, main=True, cfg=True)
#schedule next call
self.__blinkid = self.after(self.__instime[on], self.__blink, on)
return
raise ValueError('__blink: Nothing to sort!')
#reset blink
def __blinkreset(self) -> None:
#cancel after
self.after_cancel(self.__blinkid)
#reset blinksort
self.__blinksrt = None

Load image on python CheckListCtrl with transparency

I'm starting to use WX GUI on python, and on my "Hello Word" project I'm trying to create a program with the ability to read any image and show it as icon into a CheckListCtrl column. I've done the first part (read the image and draw it into the CheckListCtrl), but I'm not able to load a PNG image and keep the transparency on that icon.
My code is the following:
'''
17 June 2018
#autor: Daniel Carrasco
'''
import wx
from wx.lib.mixins.listctrl import CheckListCtrlMixin, ListCtrlAutoWidthMixin
import sys
from pathlib import Path
BACKGROUNDCOLOR = (240, 240, 240, 255);
class CheckListCtrl(wx.ListCtrl, CheckListCtrlMixin, ListCtrlAutoWidthMixin):
def __init__(self, parent):
wx.ListCtrl.__init__(self, parent, -1, style=wx.LC_REPORT | wx.SUNKEN_BORDER,
size=wx.Size(395, 467), pos=wx.Point(10, 20));
CheckListCtrlMixin.__init__(self);
ListCtrlAutoWidthMixin.__init__(self);
#====================================================================
class MainFrame(wx.Frame):
def __init__(self, *args, **kwargs):
self.dataFolder = {
"images": Path("images/")
}
wx.Frame.__init__(self, *args, **kwargs);
icon = wx.Icon("icons.ico", wx.BITMAP_TYPE_ICO)
self.SetIcon(icon);
self.createWidgets();
self.createButtons();
self.Show();
#----------------------------------------------------------
def exitGUI(self, event): # callback
self.Destroy();
#----------------------------------------------------------
def createWidgets(self):
self.CreateStatusBar(); # wxPython built-in method
self.createMenu();
# Creamos el panel
boxSizer = wx.BoxSizer();
panel = wx.Panel(self);
panel.SetBackgroundColour(BACKGROUNDCOLOR);
panel.SetSizerAndFit(boxSizer);
staticBox = wx.StaticBox( panel, -1, "Listado de Saves", size=(415, 500),
pos=wx.Point(5, 0) )
self.statBoxSizerV = wx.StaticBoxSizer(staticBox, wx.VERTICAL)
# Lista de items
self.itemList = CheckListCtrl(staticBox);
self.itemList.InsertColumn(0, '', width=32);
self.itemList.InsertColumn(1, 'Icono', width=52);
self.itemList.InsertColumn(2, 'Título', width=140);
self.il_Small = self.itemList.GetImageList(wx.IMAGE_LIST_SMALL);
self.il = wx.ImageList(48, 48, wx.IMAGE_LIST_SMALL);
self.itemList.SetImageList(self.il, wx.IMAGE_LIST_SMALL);
image = wx.Image(str(self.dataFolder["images"] / "tick_1.png"), wx.BITMAP_TYPE_ANY);
self.il.Add(wx.Bitmap(image));
image = wx.Image(str(self.dataFolder["images"] / 'tick_2.png'), wx.BITMAP_TYPE_ANY);
self.il.Add(wx.Bitmap(image));
image = wx.Image(str(self.dataFolder["images"] / 'exit.png'), wx.BITMAP_TYPE_ANY );
for x in range(0, 4):
for y in range(0, 4):
image.SetAlpha(x, y, 0);
image = image.Scale(40, 40, wx.IMAGE_QUALITY_HIGH);
image = image.Size(wx.Size(48,48), wx.Point(4,4), 255, 255, 255);
# image.ClearAlpha();
self.il.Add(wx.Bitmap(image));
image = wx.Image(str(self.dataFolder["images"] / 'test.png'), wx.BITMAP_TYPE_ANY );
image = image.Scale(40, 40, wx.IMAGE_QUALITY_HIGH);
image = image.Size(wx.Size(48,48), wx.Point(4,4), 255, 255, 255);
self.il.Add(image.ConvertToBitmap());
index = self.itemList.InsertItem(sys.maxsize, "test");
self.itemList.SetItemColumnImage(0, 1, 3)
#self.itemList.Append("Prueba");
#----------------------------------------------------------
def createButtons(self):
pass
#----------------------------------------------------------
def createMenu(self):
# Menú Archivo
APP_EXIT = 1;
mArchivo = wx.Menu();
qmi = wx.MenuItem(mArchivo, APP_EXIT, '&Salir\tCtrl+Q');
image = wx.Image(str(self.dataFolder["images"] / 'exit.png'),wx.BITMAP_TYPE_PNG);
image = image.Scale(16, 16, wx.IMAGE_QUALITY_HIGH);
qmi.SetBitmap(image.ConvertToBitmap());
mArchivo.Append(qmi);
self.Bind(wx.EVT_MENU, self.exitGUI, id=APP_EXIT);
# Barra de menús
menuBar = wx.MenuBar();
menuBar.Append(mArchivo, "&Archivo");
# Seteamos la barra de menús
self.SetMenuBar(menuBar);
#======================
# Start GUI
#======================
app = wx.App()
MainFrame(None, style= wx.SYSTEM_MENU | wx.CAPTION | wx.CLOSE_BOX, title="Savegame Linker", size=(485,587))
app.MainLoop()
This code just read the image into and Image object, then scale the image and add a border resizing. The problem is that PNG transparency is not kept and only the border is transparent:
If I remove the image transparency with Photoshop (adding white background), then the image is showed with the transparency I want:
Is there any way to keep the PNG transparency on CheckListCtrl, or at least add a white background to the image (that looks like an alternative solution). I want to do it if posible using only WX, because I think that use pillow module for example, just for remove transparency, is not an optimal solution.
Thanks!!

I don't know how you run that code but try as I might, I have been unable to do so and thus cannot be sure of the answer below.
A wx.Image has a range of "image handlers", of which, only the BMPHandler is loaded by default. I suspect that you need to load the PNGHandler before attempting SetAlpha and you should probably check the image with HasAlpha beforehand.
See: https://docs.wxpython.org/wx.Image.html
Alpha channel support
Starting from wxWidgets 2.5.0 wx.Image supports alpha channel data, that is in addition to a byte for the red, green and blue colour components for each pixel it also stores a byte representing the pixel opacity. An alpha value of 0 corresponds to a transparent pixel (null opacity) while a value of 255 means that the pixel is 100% opaque. The constants IMAGE_ALPHA_TRANSPARENT and IMAGE_ALPHA_OPAQUE can be used to indicate those values in a more readable form. While all images have RGB data, not all images have an alpha channel. Before using wx.Image.GetAlpha you should check if this image contains an alpha channel with wx.Image.HasAlpha . Currently the BMP, PNG, TGA, and TIFF format handlers have full alpha channel support for loading so if you want to use alpha you have to use one of these formats. If you initialize the image alpha channel yourself using wx.Image.SetAlpha , you should save it in either PNG, TGA, or TIFF format to avoid losing it as these are the only handlers that currently support saving with alpha.
Available image handlers The following image handlers are
available. BMPHandler is always installed by default. To use other
image formats, install the appropriate handler with
wx.Image.AddHandler or call wx.InitAllImageHandlers .
BMPHandler: For loading (including alpha support) and saving, always
installed.
wx.PNGHandler: For loading and saving. Includes alpha
support.
wx.JPEGHandler: For loading and saving.
wx.GIFHandler: For loading and saving (see below).
wx.PCXHandler: For loading and saving (see below).
wx.PNMHandler: For loading and saving (see below).
wx.TIFFHandler: For loading and saving. Includes alpha support.
wx.TGAHandler: For loading and saving. Includes alpha support.
wx.IFFHandler: For loading only. wx.XPMHandler: For loading and saving.
ICOHandler: For loading and saving. CURHandler: For loading and saving.
ANIHandler: For loading only.
When saving in PCX format, wx.PCXHandler will count the number of different colours in the image; if there are 256 or less colours, it will save as 8 bit, else it will> save as 24 bit. Loading PNMs only works for ASCII or raw RGB images.
When saving in PNM format, wx.PNMHandler will always save as raw RGB.
Saving GIFs requires images of maximum 8 bpp (see Quantize ), and the
alpha channel converted to a mask (see wx.Image.ConvertAlphaToMask ).
Saving an animated GIF requires images of the same size (see
wx.GIFHandler.SaveAnimation )
See also wx.Bitmap, wx.InitAllImageHandlers , PixelData

I think that the right way is converting the transparency into mask. I've already tested it, but looks like I've used the function after other that made it fail.
image = wx.Image(str(self.dataFolder["images"] / 'test.png'), wx.BITMAP_TYPE_ANY );
image = image.Scale(40, 40, wx.IMAGE_QUALITY_HIGH);
image.ConvertAlphaToMask(threshold=50);
image = image.Size(wx.Size(48,48), wx.Point(4,4), 255, 255, 255);
self.il.Add(image.ConvertToBitmap());
The last time I'd tried the function was after the image.Size function, and then it fails (maybe the Size function removes the transparency), but if is done before then works.
Thanks again and greetings!!
EDIT:
A few months later I've continued the project and I've found another way to make the background transparent: Remove the transparency converting it to solid white:
def remove_transparency(im, bg_colour=(255, 255, 255)):
# Only process if image has transparency (http://stackoverflow.com/a/1963146)
if im.mode in ('RGBA', 'LA') or (im.mode == 'P' and 'transparency' in im.info):
# Need to convert to RGBA if LA format due to a bug in PIL (http://stackoverflow.com/a/1963146)
alpha = im.convert('RGBA').split()[-1]
# Create a new background image of our matt color.
# Must be RGBA because paste requires both images have the same format
# (http://stackoverflow.com/a/8720632 and http://stackoverflow.com/a/9459208)
bg = Image.new("RGBA", im.size, bg_colour + (255,))
bg.paste(im, mask=alpha)
return bg
else:
return im
# Open the image
sbuf = BytesIO(campo[4])
im = Image.open(sbuf)
# Remove transparency (white background will be transparent on ImageList)
im2 = remove_transparency(im).convert("RGB")
im.close()
# Create an wx.Image from image
width, height = im2.size
image = wx.Image(width, height, im2.tobytes())
image = image.Size(wx.Size(48,48), wx.Point(2,2), 255, 255, 255)
# Convert it to Bitmap and add it to ImageList
image = image.ConvertToBitmap()
icon_image = self.il.Add(image)
sbuf.close()
I've changed slightly the way I store the images, and now they comes from a PNG stored on an SQLite DB BLOB (campo[4]).
Greetings!!

How to improve the speed of display using matplotlib

I have 2 files created, one a .pyx file with a class named AndorCamersSDK which has a function named LiveAcquisition(). The second file, a .py file with a Class AndorCameraGUI which makes use of Tkinter to create a GUI. This class has function LivePlot(), and RepeatPlot().Inside LiveAcquisition() I am acquiring N number of frames and after acquiring each frame I need to display it using LivePlot() and RepeatPlot(). Without the display, just acquiring and storing for 300 frames takes 6.2 for execution, which is fine by me. But When I start displaying even for 100 frames it takes 54sec. I need to acquire and display within 6 sec for 300 frames. How do I solve this?
File 1: .pyx code ; Present inside class AndorCameraSDK
def LiveAcquisition(self):
for i in range(no_of_frames):
data[i,:,:] = PyArray_NewFromDescr(<PyTypeObject *> np.ndarray, np.dtype('<H'), 2,dims, strides,pBuf, np.NPY_C_CONTIGUOUS, None)
if (i==0):
self.master.LivePlot(data[i,:,:])
elif (i==2) or (i==15) or (i ==65) or (i ==96):
self.master.RepeatPlot(data[i,:,:])
else:
pass
File 2 : .py code; Below functions are present inside a class named AndorCameraGUI
def LivePlot(self,image):
self.count = 0
self.fig = Figure(figsize = (4, 5))
self.fig.patch.set_facecolor('xkcd:light grey') # When this is removed a white color is seen in the background of the figure
self.a = self.fig.add_subplot(111)
self.a.set_xlim([0, self.image_width/int(self.HBin)])
self.a.set_ylim([0, self.image_height/int(self.VBin)])
image = image.transpose()
self.a.imshow(image,'gray')
self.canvas = FigureCanvasTkAgg(self.fig,self.master)
self.canvas.draw()
self.canvas.get_tk_widget().pack(side =LEFT)
self.toolbar = NavigationToolbar2TkAgg(self.canvas,self.master)
self.toolbar.update()
self.canvas._tkcanvas.pack(side = LEFT)# change this to TOP so thee the navigation toolbar on the left down
def RepeatPlot(self,image):
image = image.transpose()
self.a.imshow(image,'gray')
self.canvas.draw()

Python + GStreamer: scale video to window

I'm having some trouble rescaling video output of GStreamer to the dimension of the window the video is displayed in (retaining aspect ratio of the video). The problem is that I first need to preroll the video to be able to determine its dimensions by retrieving the negotiated caps, and then calculate the dimensions it needs to be displayed in to fit the window. Once I have prerolled the video and got the dimension caps, I cannot change the video's dimension anymore. Setting the new caps still results in the video being output in its original size. What must I do to solve this?
Just to be complete. In the current implementation I cannot render to an OpenGL texture which would have easily solved this problem because you could simply render output to the texture and scale it to fit the screen. I have to draw the output on a pygame surface, which needs to have the correct dimensions. pygame does offer functionality to scale its surfaces, but I think such an implementation (as I have now) is slower than retrieving the frames in their correct size directly from GStreamer (am I right?)
This is my code for loading and displaying the video (I omitted the main loop stuff):
def calcScaledRes(self, screen_res, image_res):
"""Calculate image size so it fits the screen
Args
screen_res (tuple) - Display window size/Resolution
image_res (tuple) - Image width and height
Returns
tuple - width and height of image scaled to window/screen
"""
rs = screen_res[0]/float(screen_res[1])
ri = image_res[0]/float(image_res[1])
if rs > ri:
return (int(image_res[0] * screen_res[1]/image_res[1]), screen_res[1])
else:
return (screen_res[0], int(image_res[1]*screen_res[0]/image_res[0]))
def load(self, vfile):
"""
Loads a videofile and makes it ready for playback
Arguments:
vfile -- the uri to the file to be played
"""
# Info required for color space conversion (YUV->RGB)
# masks are necessary for correct display on unix systems
_VIDEO_CAPS = ','.join([
'video/x-raw-rgb',
'red_mask=(int)0xff0000',
'green_mask=(int)0x00ff00',
'blue_mask=(int)0x0000ff'
])
self.caps = gst.Caps(_VIDEO_CAPS)
# Create videoplayer and load URI
self.player = gst.element_factory_make("playbin2", "player")
self.player.set_property("uri", vfile)
# Enable deinterlacing of video if necessary
self.player.props.flags |= (1 << 9)
# Reroute frame output to Python
self._videosink = gst.element_factory_make('appsink', 'videosink')
self._videosink.set_property('caps', self.caps)
self._videosink.set_property('async', True)
self._videosink.set_property('drop', True)
self._videosink.set_property('emit-signals', True)
self._videosink.connect('new-buffer', self.__handle_videoframe)
self.player.set_property('video-sink', self._videosink)
# Preroll movie to get dimension data
self.player.set_state(gst.STATE_PAUSED)
# If movie is loaded correctly, info about the clip should be available
if self.player.get_state(gst.CLOCK_TIME_NONE)[0] == gst.STATE_CHANGE_SUCCESS:
pads = self._videosink.pads()
for pad in pads:
caps = pad.get_negotiated_caps()[0]
self.vidsize = caps['width'], caps['height']
else:
raise exceptions.runtime_error("Failed to retrieve video size")
# Calculate size of video when fit to screen
self.scaledVideoSize = self.calcScaledRes((self.screen_width,self.screen_height), self.vidsize)
# Calculate the top left corner of the video (to later center it vertically on screen)
self.vidPos = ((self.screen_width - self.scaledVideoSize [0]) / 2, (self.screen_height - self.scaledVideoSize [1]) / 2)
# Add width and height info to video caps and reload caps
_VIDEO_CAPS += ", width={0}, heigh={1}".format(self.scaledVideoSize[0], self.scaledVideoSize[1])
self.caps = gst.Caps(_VIDEO_CAPS)
self._videosink.set_property('caps', self.caps) #??? not working, video still displayed in original size
def __handle_videoframe(self, appsink):
"""
Callback method for handling a video frame
Arguments:
appsink -- the sink to which gst supplies the frame (not used)
"""
buffer = self._videosink.emit('pull-buffer')
img = pygame.image.frombuffer(buffer.data, self.vidsize, "RGB")
# Upscale image to new surfuace if presented fullscreen
# Create the surface if it doesn't exist yet and keep rendering to this surface
# for future frames (should be faster)
if not hasattr(self,"destSurf"):
self.destSurf = pygame.transform.scale(img, self.destsize)
else:
pygame.transform.scale(img, self.destsize, self.destSurf)
self.screen.blit(self.destSurf, self.vidPos)
# Swap the buffers
pygame.display.flip()
# Increase frame counter
self.frameNo += 1

I'm pretty sure that your issue was (has it is very long time since you asked this question) that you never hooked up the bus to watch for messages that were emitted.
The code for this is usually something like this:
def some_function(self):
#code defining Gplayer (the pipeline)
#
# here
Gplayer.set_property('flags', self.GST_VIDEO|self.GST_AUDIO|self.GST_TEXT|self.GST_SOFT_VOLUME|self.GST_DEINTERLACE)
# more code
#
# finally
# Create the bus to listen for messages
bus = Gplayer.get_bus()
bus.add_signal_watch()
bus.enable_sync_message_emission()
bus.connect('message', self.OnBusMessage)
bus.connect('sync-message::element', self.OnSyncMessage)
# Listen for gstreamer bus messages
def OnBusMessage(self, bus, message):
t = message.type
if t == Gst.MessageType.ERROR:
pass
elif t == Gst.MessageType.EOS:
print ("End of Audio")
return True
def OnSyncMessage(self, bus, msg):
if msg.get_structure() is None:
return True
if message_name == 'prepare-window-handle':
imagesink = msg.src
imagesink.set_property('force-aspect-ratio', True)
imagesink.set_window_handle(self.panel1.GetHandle())
The key bit for your issue is setting up a call back for the sync-message and in that call-back, setting the property force-aspect-ratio to True.
This property ensures that the video fits the window it is being displayed in at all times.
Note the self.panel1.GetHandle() function names the panel in which you are displaying the video.
I appreciate that you will have moved on but hopefully this will help someone else trawling through the archives.

Generating consecutive bitmaps with wxPython trouble

Well, while I don't consider myself an experienced programmer, especially when it comes to multimedia applications, I had to do this image viewer sort of a program that displays images fullscreen, and the images change when the users press <- or -> arrows.
The general idea was to make a listbox where all the images contained in a certain folder (imgs) are shown, and when someone does double click or hits RETURN a new, fullscreen frame is generated containing, at first, the image selected in the listbox but after the user hits the arrows the images change in conecutive order, just like in a regular image viewer.
At the beginning, when the first 15 - 20 images are generated, everything goes well, after that, although the program still works an intermediary, very unpleasant and highly unwanted, effect appears between image generations, where basically some images that got generated previously are displayed quickly on the screen and after this the right, consecutive image appears. On the first apparitions the effect is barelly noticeble, but after a while it takes longer and longer between generations.
Here's the code that runs when someone does double click on a listbox entry:
def lbclick(self, eve):
frm = wx.Frame(None, -1, '')
frm.ShowFullScreen(True)
self.sel = self.lstb.GetSelection() # getting the selection from the listbox
def pressk(eve):
keys = eve.GetKeyCode()
if keys == wx.WXK_LEFT:
self.sel = self.sel - 1
if self.sel < 0:
self.sel = len(self.chk) - 1
imgs() # invocking the function made for displaying fullscreen images when left arrow key is pressed
elif keys == wx.WXK_RIGHT:
self.sel = self.sel + 1
if self.sel > len(self.chk) - 1:
self.sel = 0
imgs() # doing the same for the right arrow
elif keys == wx.WXK_ESCAPE:
frm.Destroy()
eve.Skip()
frm.Bind(wx.EVT_CHAR_HOOK, pressk)
def imgs(): # building the function
imgsl = self.chk[self.sel]
itm = wx.Image(str('imgs/{0}'.format(imgsl)), wx.BITMAP_TYPE_JPEG).ConvertToBitmap() # obtaining the name of the image stored in the list self.chk
mar = itm.Size # Because not all images are landscaped I had to figure a method to rescale them after height dimension, which is common to all images
frsz = frm.GetSize()
marx = float(mar[0])
mary = float(mar[1])
val = frsz[1] / mary
vsize = int(mary * val)
hsize = int(marx * val)
panl = wx.Panel(frm, -1, size = (hsize, vsize), pos = (frsz[0] / 2 - hsize / 2, 0)) # making a panel container
panl.SetBackgroundColour('#000000')
imag = wx.Image(str('imgs/{0}'.format(imgsl)), wx.BITMAP_TYPE_JPEG).Scale(hsize, vsize, quality = wx.IMAGE_QUALITY_NORMAL).ConvertToBitmap()
def destr(eve): # unprofessionaly trying to destroy the panel container when a new image is generated hopeing the unvanted effect, with previous generated images will disappear. But it doesn't.
keycd = eve.GetKeyCode()
if keycd == wx.WXK_LEFT or keycd == wx.WXK_RIGHT:
try:
panl.Destroy()
except:
pass
eve.Skip()
panl.Bind(wx.EVT_CHAR_HOOK, destr) # the end of my futile tries
if vsize > hsize: # if the image is portrait instead of landscaped I have to put a black image as a container, otherwise in the background the previous image will remain, even if I use Refresh() on the container (the black bitmap named fundal)
intermed = wx.Image('./res/null.jpg', wx.BITMAP_TYPE_JPEG).Scale(frsz[0], frsz[1]).ConvertToBitmap()
fundal = wx.StaticBitmap(frm, 101, intermed)
stimag = wx.StaticBitmap(fundal, -1, imag, size = (hsize, vsize), pos = (frsz[0] / 2 - hsize / 2, 0))
fundal.Refresh()
stimag.SetToolTip(wx.ToolTip('Esc = exits fullscreen\n<- -> arrows = quick navigation'))
def destr(eve): # the same lame attempt to destroy the container in the portarit images situation
keycd = eve.GetKeyCode()
if keycd == wx.WXK_LEFT or keycd == wx.WXK_RIGHT:
try:
fundal.Destroy()
except:
pass
eve.Skip()
frm.Bind(wx.EVT_CHAR_HOOK, destr)
else: # the case when the images are landscape
stimag = wx.StaticBitmap(panl, -1, imag)
stimag.Refresh()
stimag.SetToolTip(wx.ToolTip('Esc = exits fullscreen\n<- -> arrows = quick navigation'))
imgs() # invocking the function imgs for the situation when someone does double click
frm.Center()
frm.Show(True)
Thanks for any advice in advance.
Added later:
The catch is I'm trying to do an autorun presentation for a DVD with lots of images on it. Anyway it's not necessarely to make the above piece of code work properly if there are any other options. I've already tried to use windows image viewer, but strangely enough it doesn't recognizes relative paths and when I do this
path = os.getcwd() # getting the path of the current working directory
sel = listbox.GetSelection() # geting the value of the current selection from the list box
imgname = memlist[sel] # retrieving the name of the images stored in a list, using the listbox selection, that uses as choices the same list
os.popen(str('rundll32.exe C:\WINDOWS\System32\shimgvw.dll,ImageView_Fullscreen {0}/imgsdir/{1}'.format(path, imgname))) # oepning the images up with bloody windows image viewer
it opens the images only when my program is on the hard disk, if it's on a CD / image drive it doesn't do anything.

There's an image viewer included with the wxPython demo package. I also wrote a really simple one here. Either one should help you in your journey. I suspect that you're not reusing your panels/frames and instead you're seeing old ones that were never properly destroyed.