有些事情一直困扰着我，而且事实上我必须点击并点击应用程序中的按键功能才能工作。有什么办法可以解决吗？ 代码以防万一你需要它：
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace dog_simulator
{
public partial class Form1 : Form
{
public bool KeyPreview { get; set; }
bool right;
bool left;
bool up;
bool down;
public int left_var = 5;
public int right_var = 5;
public Form1()
{
this.KeyPreview = true;
InitializeComponent();
Pee.Left += 220;
}
private void label1_Click(object sender, EventArgs e)
{
}
public void button2_Click(object sender, EventArgs e)
{
panel1.Visible = false;
}
public void button1_Click(object sender, EventArgs e)
{
panel1.Visible = false;
}
public void Form1_KeyDown(object sender, KeyEventArgs e)
{
if (e.KeyCode == Keys.Left)
{
left = true;
Console.WriteLine("Left has been pressed");
}
if(e.KeyCode == Keys.Right)
{
right = true;
Console.WriteLine("Right has been pressed");
}
if(e.KeyCode == Keys.Up)
{
up = true;
Console.WriteLine("Up has been pressed");
}
if(e.KeyCode == Keys.Down)
{
down = true;
Console.WriteLine("Down has been pressed");
}
}
public void Form1_KeyUp(object sender, KeyEventArgs e)
{
if (e.KeyCode == Keys.Left)
{
left = false;
Console.WriteLine("Left has been let go of");
}
if (e.KeyCode == Keys.Right)
{
right = false;
Console.WriteLine("Right has been let go of");
}
if (e.KeyCode == Keys.Up)
{
up = false;
Console.WriteLine("Up has been let go of");
}
if (e.KeyCode == Keys.Down)
{
down = false;
Console.WriteLine("Down has been let go of");
}
}
public void timer1_Tick(object sender, EventArgs e)
{
if (right == true)
{
player.Left += left_var;
}
if (left == true)
{
player.Left -= left_var;
}
Invalidate();
if (up == true)
{
player.Top -= left_var;
}
if (down == true)
{
player.Top += left_var;
}
}
private void dog_Click(object sender, EventArgs e)
{
}
private void player_Click(object sender, EventArgs e)
{
}
private void Form1_KeyPress(object sender, KeyPressEventArgs e)
{
}
private void PeeTime_Tick(object sender, EventArgs e)
{
if(panel1.Visible == false)
{
Pee.Left -= 5;
if (Pee.Bounds.IntersectsWith(pee2.Bounds))
{
Pee.Left += 220;
}
}
}
}
}