我想在winfor应用程序中移动一些图形。为此,我需要知道是否按下了任何光标键。我试图覆盖ProcessCmdKey,但没有成功。
任何提示/想法如何实现这一点?
protected override bool ProcessCmdKey(ref Message msg, Keys keyData)
{
switch (keyData)
{
case Keys.Left:
// while Left is down
// call this method repeadetdly
buttonGoLeft();
// when key is up stop calling this method
// and check for other keys
return true;
//Other cases
}
}
这
行得通!
using System.Windows.Forms;
namespace WindowsFormsApplication5
{
public partial class Form2 : Form
{
public Form2()
{
InitializeComponent();
KeyPreview = true;
}
protected override bool ProcessCmdKey(ref Message msg, Keys keyData)
{
switch (keyData)
{
case Keys.Left:
// while Left is down
// call this method repeadetdly
MessageBox.Show("its left", Application.ProductName, MessageBoxButtons.OK, MessageBoxIcon.Information);
// when key is up stop calling this method
// and check for other keys
return true;
default:
return false;
}
}
}
}