c# – 确定打开了哪个标签页
作者:互联网
我正在尝试获取鼠标右键单击的标签页,换句话说是打开contextmenustrip的标签页.
有一个名为Close的toolstripmenuitem,我用它来关闭点击的标签.
我用过这段代码:
public partial class USBrowser : Form
{
private Point lastpoint;
}
private void closeTabToolStripMenuItem_Click(object sender, EventArgs e)
{
for (int i = 0; i < browserTabControl.TabCount; i++)
{
Rectangle rec = browserTabControl.GetTabRect(i);
if (rec.Contains(this.PointToClient(lastpoint)))
closeTab(i);//this function closes the tab at specific index
}
}
protected override void onm ouseClick(MouseEventArgs e)
{
base.OnMouseClick(e);
if (e.Button == MouseButtons.Right)
lastpoint = Cursor.Position;
}
我还添加了(添加标签页时):
browserTabControl.TabPages.Insert(browserTabControl.TabCount - 1,WebPage);
browserTabControl.SelectTab(WebPage);
browserTabControl.SelectedTab.MouseClick += SelectedTab_MouseClick;
void SelectedTab_MouseClick(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Right)
lastpoint = Cursor.Position;
}
问题是最后一个点总是(0,0)!!
为什么?
欢迎任何其他建议的想法
提前
解决方法:
这些事件处理程序都不会实际运行.不是表单的OnMouseClick()方法,因为您实际上没有右键单击表单.而不是标签页的MouseClick事件处理程序,因为您给TabControl一个上下文菜单.所以最后一点是空的是预期的结果.
目前尚不清楚您希望此上下文菜单如何工作.如果您通过右键单击选项卡页面来使用它,那么它很简单,只需销毁所选页面:
private void closeToolStripMenuItem_Click(object sender, EventArgs e) {
tabControl1.SelectedTab.Dispose();
}
如果通过右键单击未选中的选项卡来激活它,则会变得更复杂.您必须记住单击了哪个选项卡,使用上下文菜单的Opening事件来执行此操作:
private TabPage RightClickedTab;
private void contextMenuStrip1_Opening(object sender, CancelEventArgs e) {
RightClickedTab = tabControl1.SelectedTab;
var pos = tabControl1.PointToClient(Cursor.Position);
for (int tab = 0; tab < tabControl1.TabCount; ++tab) {
if (tabControl1.GetTabRect(tab).Contains(pos)) {
RightClickedTab = tabControl1.TabPages[tab];
break;
}
}
}
private void closeToolStripMenuItem_Click(object sender, EventArgs e) {
if (RightClickedTab != null) RightClickedTab.Dispose();
}
标签:c,click,tabpage,contextmenustrip 来源: https://codeday.me/bug/20190624/1279953.html