工具提示不应显示在MouseHover上

Question

我有一个具有关联工具提示的picturebox，我想在点击picturebox时显示它，而不是当鼠标悬停在它上面时。我尝试为picturebox创建一个空的MouseHover事件，但是工具提示仍然显示：

    private void pictureBox3_MouseHover(object sender, EventArgs e)
    {

    }

    private void pictureBox3_Click(object sender, EventArgs e)
    {
        int durationMilliseconds = 30000;
        toolTip1.Show(toolTip1.GetToolTip(pictureBox3), pictureBox3, durationMilliseconds);
    }

如果没有在MouseHover上显示工具提示，我可以做什么？

Answer 1

不要为pictureBox3设置工具提示(删除它)。给一个人看：

// On class scope to have access from MouseEnter
ToolTip tt = new ToolTip();

private void pictureBox3_Click(object sender, EventArgs e)
{
    int durationMilliseconds = 30000;        
    tt.IsBalloon = true;
    tt.InitialDelay = 0;
    tt.Show("tooltip text", pictureBox3, durationMilliseconds);
}

要防止永久设置工具提示，请将事件处理程序添加到MouseEnter的picturebox中

private void pictureBox3_MouseEnter(object sender, EventArgs e)
{
     tt.RemoveAll();
}