Question

我正在制作一个小程序，使用wxpython和ogl库在python中绘制段。我已经创建并将画布添加到sizer中，但无法冻结画布的大小。

sizer = wx.BoxSizer(wx.VERTICAL)
canvas_sizer = wx.BoxSizer(wx.HORIZONTAL)
text_sizer = wx.BoxSizer(wx.HORIZONTAL)
stat = wx.StaticText(panel,-1,'position')

canvas = ogl.ShapeCanvas(panel)
diagram = ogl.Diagram()
canvas.SetDiagram(diagram)
diagram.SetCanvas(canvas)

canvas_sizer.Add(canvas,1,wx.GROW)
text_sizer.Add(stat,1,wx.ALL,5)
sizer.Add(canvas_sizer,1,wx.GROW)
sizer.Add(text_sizer)

self.SetSizer(sizer)
sizer.Fit(self)

上面的代码是我实际代码的一部分。请建议如何使画布大小固定

Answer 1

您必须将插槽必须占用的比例设置为0，并在必要时为内容提供最小尺寸：

sizer = wx.BoxSizer(wx.VERTICAL)
text_sizer = wx.BoxSizer(wx.HORIZONTAL)
canvas_sizer = wx.BoxSizer(wx.HORIZONTAL)
stat = wx.StaticText(self, -1, "position")

# for testing I used a panel instead of your ogl object
canvas = wx.Panel(self, -1)    
canvas.SetMinSize((-1, 70))     # Needed here to give a min size to panel,
                                # otherwise the panel would not be seen.
                                # The sizer will occupy the minimal 
                                # to hold its contents.

canvas_sizer.Add(canvas, 1, wx.EXPAND, 0)
sizer.Add(canvas_sizer, 0, wx.EXPAND, 0)   # <- note proportion 0 here
text_sizer.Add(stat, 1, wx.EXPAND, 0)
sizer.Add(text_sizer, 1, wx.EXPAND, 0)
self.SetSizer(sizer)
sizer.Fit(self)
self.Layout()

修复了wxpython ogl库中的画布形状

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