不知道我是否应该回答我自己的问题，但我确实找到了解决问题的方法，我想和大家分享。我用的是wx2.8版。我发现在2.9和3.0中有一个小部件被添加到WrapSizer。有一次我把wx版本升级到了3.0版本，这使得解决方案变得非常简单。下面是重要的代码片段。在self.PhotoMaxWidth = 100

self.PhotoMaxHeight = 100

self.GroupOfThumbnailsSizer = wx.WrapSizer()

self.CreateThumbNails(len(ListOfPhotots),ListOfPhotots)

self.GroupOfThumbnailsSizer.SetSizeHints(self.whateverPanel)

self.whateverPanel.SetSizer(self.GroupOfThumbnailsSizer)

self.whateverPanel.Layout()

def CreateThumbNails(self, n, ListOfFiles):

thumbnails = []

backgroundcolor = "white"

for i in range(n):

ThumbnailSizer = wx.BoxSizer(wx.VERTICAL)

self.GroupOfThumbnailsSizer.Add(ThumbnailSizer, 0, 0, 0)

thumbnails.append(ThumbnailSizer)

for thumbnailcounter, thumbsizer in enumerate(thumbnails):

image = Image.open(ListOfFiles[thumbnailcounter])

image = self.ResizeAndCenterImage(image, self.PhotoMaxWidth, self.PhotoMaxHeight, backgroundcolor)

img = self.pil_to_image(image)

thumb= wx.StaticBitmap(self.timelinePanel, wx.ID_ANY, wx.BitmapFromImage(img))

thumbsizer.Add(thumb, 0, wx.ALL, 5)

return

def pil_to_image(self, pil, alpha=True):

""" Method will convert PIL Image to wx.Image """

if alpha:

image = apply( wx.EmptyImage, pil.size )

image.SetData( pil.convert( "RGB").tostring() )

image.SetAlphaData(pil.convert("RGBA").tostring()[3::4])

else:

image = wx.EmptyImage(pil.size[0], pil.size[1])

new_image = pil.convert('RGB')

data = new_image.tostring()

image.SetData(data)

return image

def ResizeAndCenterImage(self, image, NewWidth, NewHeight, backgroundcolor):

width_ratio = NewWidth / float(image.size[0])

temp_height = int(image.size[1] * width_ratio)

if temp_height < NewHeight:

img2 = image.resize((NewWidth, temp_height), Image.ANTIALIAS)

else:

height_ratio = NewHeight / float(image.size[1])

temp_width = int(image.size[0] * height_ratio)

img2 = image.resize((temp_width, NewHeight), Image.ANTIALIAS)

background = Image.new("RGB", (NewWidth, NewHeight), backgroundcolor)

masterwidth = background.size[0]

masterheight = background.size[1]

subwidth = img2.size[0]

subheight = img2.size[1]

mastercenterwidth = masterwidth // 2

mastercenterheight = masterheight // 2

subcenterwidth = subwidth // 2

subcenterheight = subheight // 2

insertpointwidth = mastercenterwidth - subcenterwidth

insertpointheight = mastercenterheight - subcenterheight

background.paste(img2, (insertpointwidth, insertpointheight))

return background

我从另一个stackoverflow帖子中得到了pil-tu-to-tu图像部分，我写了ResizeAndCenterImage部分，使我所有的缩略图大小相同，同时保持纵横比不变，不做任何裁剪。如果您愿意，可以一起跳过resize和center调用。在