Question

我已经设置了鼠标离开＆＃39;在窗体上的事件，我想在鼠标离开可见区域时隐藏窗体。

但这是我遇到问题的地方。即使我将鼠标移动到同一表格上的按钮，它也会调用鼠标离开＆＃39;事件，使这种形式不可见。

这意味着当我将鼠标移动到按钮时，我必须阻止事件触发。但是怎么样？还有其他方法吗？

Answer 1

没有简单的方法可以做到这一点。一种方法是检查表单内的所有控件，如果鼠标没有超过任何一个，这意味着鼠标在表单之外

另一种方法是检查鼠标离开事件内部鼠标是否在窗口边界内

Answer 2

// On the form's MouseLeave event, please checking for mouse position is not in each control's client area.
    private void TheForm_MouseLeave(object sender, EventArgs e)
    {
        bool mouse_on_control = false;
        foreach (Control c in Controls)
            mouse_on_control |= c.RectangleToScreen(c.ClientRectangle).Contains(Cursor.Position);
        if (!mouse_on_control)
            Close();
    }

// And in addition, if any control inside has its client area overlapping the form's client area at any border, 
// please also checking if mouse position is outside the form's client area on the control's MouseLeave event.
    private void ControlOverlappedTheFormsBorder_MouseLeave(object sender, EventArgs e)
    {
        if (!RectangleToScreen(ClientRectangle).Contains(Cursor.Position))
            Close();
    }

Answer 3

它非常简单......添加：

QueryDataSource

Windows窗体上的鼠标离开事件

3 个答案: