我对 python 相当陌生,正在尝试使用 cairo 和 wxpython 编写一个简单的程序。我习惯于将 cairo 与 gtk 和 C 一起使用,但我发现自己很困惑。
我用以下代码为自己构建了一个简单的 ui:
import wx
class Frame(wx.Frame):
def __init__(self, *args, **kwargs):
super(Frame, self).__init__(*args, **kwargs)
self.InitUI()
def InitUI(self):
#----------------------------------------------------
# Build menu bar and submenus
menubar = wx.MenuBar()
# file menu containing quit menu item
fileMenu = wx.Menu()
quit_item = wx.MenuItem(fileMenu, wx.ID_EXIT, '&Quit\tCtrl+W')
fileMenu.AppendItem(quit_item)
self.Bind(wx.EVT_MENU, self.OnQuit, quit_item)
menubar.Append(fileMenu, '&File')
# help menu containing about menu item
helpMenu = wx.Menu()
about_item = wx.MenuItem(helpMenu, wx.ID_ABOUT, '&About\tCtrl+A')
helpMenu.AppendItem(about_item)
self.Bind(wx.EVT_MENU, self.OnAboutBox, about_item)
menubar.Append(helpMenu, '&Help')
self.SetMenuBar(menubar)
#----------------------------------------------------
# Build window layout
panel = wx.Panel(self)
#panel.SetBackgroundColour('yellow')
vbox = wx.BoxSizer(wx.VERTICAL)
panel.SetSizer(vbox)
midPan = wx.Panel(panel)
#midPan.SetBackgroundColour('blue')
hbox = wx.BoxSizer(wx.HORIZONTAL)
vbox.Add(midPan, 1, wx.EXPAND | wx.ALL, 12)
midPan.SetSizer(hbox)
smallPan = wx.Panel(panel)
#smallPan.SetBackgroundColour('red')
hbox2 = wx.BoxSizer(wx.HORIZONTAL)
vbox.Add(smallPan, 0, wx.ALIGN_RIGHT|wx.LEFT|wx.RIGHT|wx.BOTTOM, 12)
smallPan.SetSizer(hbox2)
#----------------------------------------------------
# Place buttons in correct box corresponding with panel
close_button = wx.Button(smallPan, wx.ID_CLOSE)
self.Bind(wx.EVT_BUTTON, self.OnQuit, close_button)
hbox2.Add(close_button)
#----------------------------------------------------
# Set window properties
self.SetSize((1600, 1200))
self.SetTitle('PROGRAM NAME')
self.Centre()
def OnQuit(self, e):
self.Close()
def main():
ex = wx.App()
f = Frame(None)
f.Show(True)
ex.MainLoop()
if __name__ == '__main__':
main()
我希望能够在名为 midPan 的面板中绘图。如何添加 OnDraw 函数并链接信号处理程序?
我非常感谢帮助。