Question

c#中怎样在mousemove中判断按键

Answer 1

你可以在MouseDown中设置一个bool变量，使其为true，然后在MouseMove中判断这个bool变量是否为true就是判断按键

Answer 2

public partial class Form1 : Form
{
private bool CtrlDown = false;
public Form1()
{
InitializeComponent();
}

private void Form1_KeyDown(object sender, KeyEventArgs e)
{
CtrlDown = e.Control;
}

private void Form1_MouseMove(object sender, MouseEventArgs e)
{
if (CtrlDown)
{
this.Cursor = Cursors.WaitCursor;
}
else
this.Cursor = Cursors.Default;
}

private void Form1_KeyUp(object sender, KeyEventArgs e)
{
CtrlDown = e.Control;
}
}

在form1上移动鼠标的时候，按住ctrl，鼠标形状会变化。

Answer 3

事件