Question

我一直在研究wxpython中的GUI代码，它或多或少地重复相同的信息4次。屏幕上有很多按钮，我必须将事件绑定到，我发现我有很多看起来几乎相同的on_button_click定义。所以，我想知道在将按钮绑定到事件并删除3个定义时是否有一种方法可以直接传递参数。这是一个例子：

self.VDBenchSlot1 = wx.Button(self, -1, "Slot 1 VDBench")
sizer.Add(self.VDBenchSlot1,(1, 5), (1, 5), wx.EXPAND)
self.VDBenchSlot1.Bind(wx.EVT_BUTTON, self.VDBenchSlot1_clicked)

self.VDBenchSlot2 = wx.Button(self, -1, "Slot 2 VDBench")
sizer.Add(self.VDBenchSlot2,(1, 5), (1, 5), wx.EXPAND)
self.VDBenchSlot2.Bind(wx.EVT_BUTTON, self.VDBenchSlot2_clicked)

self.VDBenchSlot3 = wx.Button(self, -1, "Slot 3 VDBench")
sizer.Add(self.VDBenchSlot3,(1, 5), (1, 5), wx.EXPAND)
self.VDBenchSlot3.Bind(wx.EVT_BUTTON, self.VDBenchSlot3_clicked)

self.VDBenchSlot4 = wx.Button(self, -1, "Slot 4 VDBench")
sizer.Add(self.VDBenchSlot4,(1, 5), (1, 5), wx.EXPAND)
self.VDBenchSlot4.Bind(wx.EVT_BUTTON, self.VDBenchSlot4_clicked)

def VDBenchSlot1_clicked(self, event):       
    global diskchange
    if diskchange[1] == 'No Disk':
        self.TextSlot1.AppendText("No Disk is currently in the slot so you cannot run this! \n")
    else:  
        # Open the file startDisk#VD.sh that has the setup to start running VDBench
        os.system("echo pcieRocks | sudo -S gnome-terminal --profile=VDbench --working-directory=/home/pciedev3ubuntu/Documents -e './vdbench -f disk%dVDscript.txt -vr' &" %diskchange[1])

def VDBenchSlot2_clicked(self, event):
    global diskchange

    if diskchange[2] == 'No Disk':
        self.TextSlot2.AppendText("No Disk is currently in the slot so you cannot run this! \n")
    else:   
        # Open the file startDisk#VD.sh that has the setup to start running VDBench
        os.system("echo pcieRocks | sudo -S gnome-terminal --profile=VDbench --working-directory=/home/pciedev3ubuntu/Documents -e './vdbench -f disk%dVDscript.txt -vr' &" %diskchange[2])

def VDBenchSlot3_clicked(self, event):
    global diskchange

    if diskchange[3] == 'No Disk':
        self.TextSlot3.AppendText("No Disk is currently in the slot so you cannot run this! \n") 
    else:   
        # Open the file startDisk#VD.sh that has the setup to start running VDBench
        os.system("echo pcieRocks | sudo -S gnome-terminal --profile=VDbench --working-directory=/home/pciedev3ubuntu/Documents -e './vdbench -f disk%dVDscript.txt -vr' &" %diskchange[3])

def VDBenchSlot4_clicked(self, event):
    global diskchange

    if diskchange[4] == 'No Disk':
        self.TextSlot4.AppendText("No Disk is currently in the slot so you cannot run this! \n")
    else:   
        # Open the file startDisk#VD.sh that has the setup to start running VDBench
        os.system("echo pcieRocks | sudo -S gnome-terminal --profile=VDbench --working-directory=/home/pciedev3ubuntu/Documents -e './vdbench -f disk%dVDscript.txt -vr' &" %diskchange[4])

我尝试将VDBenchslotx_clicked更改为VDBenchslotx_clicked（）并将参数传递给它，但是发生了两件事之一;它告诉我输入的参数与def的参数不匹配，或者它允许我的程序运行，但它会在程序启动时自动执行def，而不是按下按钮时，然后按钮无法正常运行。

Answer 1

使用lambda表达式将参数传递给绑定函数。例如：

self.VDBenchSlot1.Bind(wx.EVT_BUTTON, lambda event: self.VDBenchSlot_clicked(event, 1))

def VDBenchSlot_clicked(self, event, position):   
    if position == 1:
        text_slot = self.TextSlot1
    elif position == 2:
        text_slot = self.TextSlot2
    elif position == 3:
        text_slot = self.TextSlot3
    elif position == 4:
        text_slot = self.TextSlot4    
    global diskchange
    if diskchange[position] == 'No Disk':
        text_slot.AppendText("No Disk is currently in the slot so you cannot run this! \n")
    else:  
        # Open the file startDisk#VD.sh that has the setup to start running VDBench
        os.system("echo pcieRocks | sudo -S gnome-terminal --profile=VDbench --working-directory=/home/pciedev3ubuntu/Documents -e './vdbench -f disk%dVDscript.txt -vr' &" %diskchange[position])

Answer 2

dbc（和the linked question）展示了如何实现您的目标。但这是我在上面的评论中提到的辅助功能概念的简短演示。

def make_button(text, callback):
    button = wx.Button(self, -1, text)
    sizer.Add(button, (1, 5), (1, 5), wx.EXPAND)
    button.Bind(wx.EVT_BUTTON, callback)
    return button

self.VDBenchSlot1 = make_button("Slot 1 VDBench", self.VDBenchSlot1_clicked)
self.VDBenchSlot2 = make_button("Slot 2 VDBench", self.VDBenchSlot2_clicked)

请注意，make_button 的签名中没有self。那是因为它不是方法，它是在方法中定义的函数。有关GTK2 +中完整运行的示例，请参阅this answer。

另请注意，我的代码基于您的原始代码，但您应该很容易使其适应使用dbc的新VDBenchSlot_clicked回调方法。

通过将参数传递给定义来缩短GUI代码

2 个答案: