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[英]C# Winform: How to restrict a user to go into particular TabPage in TabControl
[英]How to check Mouse Out on a Tab area of TabPage in C# Winform?
我想检查C#Winform中TabPage的Tab区域上的Mouse In / Out。
有事件MouseLeave,MouseEnter,MouseMove,但对于整个TabPage都有效。 我只想要Tab。
TabControl tabControl = new TabControl();
TabPage tabpage = new TabPage();
tabpage.MouseMove += new System.Windows.Forms.MouseEventHandler(panel1_MouseMove);
tabControl.Controls.Add(tabpage);
this.Controls.Add(tabControl);
我在想,如果我了解Tab区域,以便可以在MouseMove事件中编写相同的代码,是否有更好的方法来执行此操作?
我想要附图中箭头所指的区域。
GetTabRect函数将在这里为您提供帮助:
TabPage mouseTab = null;
void tabControl1_MouseMove(object sender, MouseEventArgs e) {
TabPage checkTab = null;
for (int i = 0; i < tabControl1.TabPages.Count; ++i) {
if (tabControl1.GetTabRect(i).Contains(e.Location)) {
checkTab = tabControl1.TabPages[i];
break; // To avoid unnecessary loop
}
}
if (checkTab == null && mouseTab != null) {
mouseTab = null;
} else if (checkTab != null) {
if (mouseTab == null || !checkTab.Equals(mouseTab)) {
mouseTab = checkTab;
// or do something here...
}
}
}
并处理鼠标离开选项卡标题区域:
void tabControl1_MouseLeave(object sender, EventArgs e) {
if (mouseTab != null) {
// do something here with mouseTab...
mouseTab = null;
}
}
您可以在“选项卡”的整个区域上放置一个面板控件,然后将您提到的事件用于该面板控件。
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