从 wxtreeCtrl 获取选定的项目

发布于 2024-12-12 08:20:15 字数 412 浏览 1 评论 0原文

你应该如何在wxTreeCtrl中选择项目？我将方法绑定到激活的项目，如下所示：

 self.tree.Bind (wx.EVT_TREE_ITEM_ACTIVATED, self.OnAdd, id=10)

在方法 OnAdd 中，我尝试获取该项目：

    def OnAdd(self, event):
        item =  event.GetItem()

但它给出错误，表明事件没有 GetItem() 方法。有什么想法吗？

更新：

我分配了一个按钮事件来处理所选项目。这就是为什么该活动没有附加项目的原因。

原文

How should you get the item selected in wxTreeCtrl? I bind the method to the activated item like this:

 self.tree.Bind (wx.EVT_TREE_ITEM_ACTIVATED, self.OnAdd, id=10)

And in the method OnAdd I try to get the item:

    def OnAdd(self, event):
        item =  event.GetItem()

But it gives error that event has no GetItem() method. Any idea?

UPDATE:

I had assigned a button event to process selected item.
So that's why the event had not item attached to it..

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格子衫的從容 2024-12-19 08:20:15

您错误地绑定了回调。您当前所做的：

self.Bind (wx.EVT_TREE_ITEM_ACTIVATED, self.OnAdd, id=10)

但第三个参数是源； id 是第四个参数。因此，将其更改为：

self.tree = wx.TreeCtrl(self, size=(200,100)) # Or however you defined it
self.Bind(wx.EVT_TREE_ITEM_ACTIVATED, self.OnAdd, self.tree, id=10)

这样，您将在 OnAdd 函数中获得的 event 参数将是 tree 实例，该实例将具有GetItem 方法可用。

完整示例：

import wx

class TreeExample(wx.Frame):
    def __init__(self):
        wx.Frame.__init__(self, None, title='Tree Example', size=(200, 130))
        self.tree = wx.TreeCtrl(self, size=(200, 100))

        root = self.tree.AddRoot('root')
        for item in ['item1', 'item2', 'item3']:
            self.tree.AppendItem(root, item)
        self.Bind(wx.EVT_TREE_ITEM_ACTIVATED, self.OnActivated, self.tree)
        self.tree.Expand(root)

    def OnActivated(self, evt):
        print 'Double clicked on', self.tree.GetItemText(evt.GetItem())

app = wx.PySimpleApp(None)
TreeExample().Show()
app.MainLoop()

You are binding the callback incorrectly. You currently do:

self.Bind (wx.EVT_TREE_ITEM_ACTIVATED, self.OnAdd, id=10)

But the 3rd parameter is the source; id is the 4th parameter. So, change it to this:

self.tree = wx.TreeCtrl(self, size=(200,100)) # Or however you defined it
self.Bind(wx.EVT_TREE_ITEM_ACTIVATED, self.OnAdd, self.tree, id=10)

This way, the event argument you will get in your OnAdd function will be the tree instance, which will have the GetItem method available.

Full example:

import wx

class TreeExample(wx.Frame):
    def __init__(self):
        wx.Frame.__init__(self, None, title='Tree Example', size=(200, 130))
        self.tree = wx.TreeCtrl(self, size=(200, 100))

        root = self.tree.AddRoot('root')
        for item in ['item1', 'item2', 'item3']:
            self.tree.AppendItem(root, item)
        self.Bind(wx.EVT_TREE_ITEM_ACTIVATED, self.OnActivated, self.tree)
        self.tree.Expand(root)

    def OnActivated(self, evt):
        print 'Double clicked on', self.tree.GetItemText(evt.GetItem())

app = wx.PySimpleApp(None)
TreeExample().Show()
app.MainLoop()

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最近可好 2024-12-19 08:20:15

只是我的 2 美分：

两天来我一直在寻找 C++/wxWidgets 的相同解决方案。

我发现了一个非常好的工作示例：

我将 Codeblocks 与 wxSmith（RAD 工具）一起使用。 Ubuntu Bionic
从 Windows 进行 Ssh &&出口展示&& Codeblocks

这是此特定事件的代码...

void test12052019Frame::OnTreeCtrl1ItemActivated(wxTreeEvent& event)
{
//TreeCtrl1 is my tree
//when I click on any option of my tree
//it activates a wxMessageBox with the label
//of the option selected...
//just let go your imagination :)
//A youtube video will follow.

wxString thelabel;
wxTreeItemId test3;

test3 = TreeCtrl1->GetSelection();//id of the item selected
thelabel = TreeCtrl1->GetItemText(test3);//extract associated text

wxMessageBox(thelabel); //shazam !


}

youtube 上的工作示例

just my 2cents:

I've been looking for the same solution with C++/wxWidgets for 2 days.

I found a really good working example:

I use Codeblocks with wxSmith(RAD tool). Ubuntu Bionic
Ssh from windows && export display && Codeblocks

And here's the code for this specific Event...

void test12052019Frame::OnTreeCtrl1ItemActivated(wxTreeEvent& event)
{
//TreeCtrl1 is my tree
//when I click on any option of my tree
//it activates a wxMessageBox with the label
//of the option selected...
//just let go your imagination :)
//A youtube video will follow.

wxString thelabel;
wxTreeItemId test3;

test3 = TreeCtrl1->GetSelection();//id of the item selected
thelabel = TreeCtrl1->GetItemText(test3);//extract associated text

wxMessageBox(thelabel); //shazam !


}

Working example on youtube

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