c# - 关键功能不起作用c#

Question

如我所见，我的代码没有问题，这是一款突破性游戏，但出于测试目的，我需要能够使用键http://pastebin.com/fJWk1ifH手动上下左右

txtBox.KeyDown += new System.Windows.Forms.KeyEventHandler(txtBox_KeyDown); //initialisation for key presson on textbox

private void txtBox_KeyDown(object sender, KeyEventArgs e)
{
    if (e.KeyCode == Keys.Up)
    {
        xChange = 0;
        yChange = -(trackbarSpeed.Value);
    }

    if (e.KeyCode == Keys.Down)
    {
        xChange = 0;
        yChange = (trackbarSpeed.Value);
    }

    if (e.KeyCode == Keys.Left)
    {
        yChange = 0;
        xChange = -(trackbarSpeed.Value);
    }

    if (e.KeyCode == Keys.Right)
    {
        yChange = 0;
        xChange = (trackbarSpeed.Value);
    }
}

Answer 1

您可以将表单的“KeyPreview”属性设置为 true，或按照此处的建议覆盖 ProcessCmdKey() 方法Key Events: ProcessCmdKey

后者是更好的方法。