好吧，虽然我不认为自己是一个有经验的程序员，尤其是在多媒体应用程序方面，但我不得不做这种图像查看器之类的程序，它可以全屏显示图像，并且当用户按下 <- 或 -> 时图像会发生变化箭头。
一般的想法是创建一个列表框，其中显示某个文件夹（imgs）中包含的所有图像，当有人双击或点击返回时，会生成一个新的全屏帧，首先包含在列表框中选择的图像但在用户点击箭头后，图像会以连续顺序变化，就像在常规图像查看器中一样。
一开始，当生成前 15-20 张图像时，一切都很顺利，之后，尽管程序仍然在中间工作，非常不愉快且非常不需要，但在图像生成之间会出现效果，其中基本上之前生成的一些图像是快速显示在屏幕上，然后出现右侧的连续图像。在第一次出现时，效果几乎不明显，但过了一段时间，两代人之间的时间越来越长。
这是当有人双击列表框条目时运行的代码：
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)
感谢您提前提供任何建议。
后来补充：
问题是我正在尝试为带有大量图像的 DVD 进行自动运行演示。无论如何，如果有任何其他选项，则不一定要使上述代码正常工作。我已经尝试使用 Windows 图像查看器，但奇怪的是它不能识别相对路径，当我这样做时
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
只有当我的程序在硬盘上时，它才会打开图像，如果它在 CD/图像驱动器上，它什么也不做。