winform 以不规则图形背景显示窗体

小程序：扫一扫查出行
【扫一扫了解最新限行尾号】
复制小程序

一：创建一个winform窗体，把BackgroundImage引入一个不规则的图片，设置属性BackgroundImageLayout为Stretch

二：主要代码

using System;
using System.Drawing;
using System.Media;
using System.Runtime.InteropServices;
using System.Security.Permissions;
using System.Windows.Forms;namespace TestDemo
{public partial class Form1 : Form
{
bool beginMove = false;
int currentXPosition;
int currentYPosition;
public Form1()
{
InitializeComponent();
} private void Form1_Load(object sender, EventArgs e)
{
this.TransparencyKey = Color.White; //设置默认透明色
this.BackColor = this.TransparencyKey; //设置当前窗体的背景色为透明
this.FormBorderStyle = FormBorderStyle.None; //隐藏窗体边框
} private void Form1_MouseDown(object sender, MouseEventArgs e)
{
//窗体拖拽
beginMove = true;
currentXPosition = MousePosition.X;
currentYPosition = MousePosition.Y;
this.Refresh();
} private void Form1_MouseLeave(object sender, EventArgs e)
{
//设置初始状态
currentXPosition = ;
currentYPosition = ;
beginMove = false;
} private void Form1_MouseMove(object sender, MouseEventArgs e)
{
if (beginMove)
{
//根据鼠标X坐标确定窗体X坐标
this.Left += MousePosition.X - currentXPosition;
//根据鼠标Y坐标确定窗体Y坐标
this.Top += MousePosition.Y - currentYPosition;
currentXPosition = MousePosition.X;
currentYPosition = MousePosition.Y;
} }
private void Form1_MouseUp(object sender, MouseEventArgs e)
{
beginMove = false;
}
private void Form1_Click(object sender, EventArgs e)
{
try
{
SoundPlayer player = new SoundPlayer();
player.SoundLocation = Application.StartupPath + "\\BIGBANG.wav";
player.Load();
player.Play();
}
catch (Exception ex)
{ MessageBox.Show(ex.Message);
}
}
}
}