当控件不可见时，MouseHover和MouseLeave不起作用 [英] MouseHover and MouseLeave don't work when the control is invisible

问题描述

由于某些原因，MouseHover和MouseLeave函数的行为确实很奇怪。我需要做的就是，当光标在按钮上时，我想使按钮可见，而当光标离开按钮时，我要使其不可见。无论我尝试什么，都无法正常工作。

For some reason MouseHover and MouseLeave functions behave really strange. All I need to do is, when the cursor is over the "button", I want to make the button visible and when the cursor leaves the button, I want to make it invisible. Whatever I try I couldn't make it work. It seems like Mouse events not working when the control object is invisible.

private void button1_MouseHover(object sender, EventArgs e)
{
   button1.Visible = true;
}

private void button1_MouseLeave(object sender, EventArgs e)
{
    button1.Visible = false;
}

推荐答案

嗯...就是这样有用。继续处理按钮的 MouseLeave 事件，并为其父项处理 MouseMove （我以表格形式）：

Well... that's how it works. Continue handling the button's MouseLeave event and handle MouseMove for its parent (I assume the form):

private void Form_MouseMove(object sender, MouseEventArgs e) {
    if (button1.Bounds.Contains(e.Location) && !button1.Visible) {
        button1.Show();
    }
}

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