在一个窗体中设置窗体的背景图片后,如果窗体大小改变时,图片并不会随之发生变化,下面就是我的解决方案:
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
namespace WindowsApplication9
{
/// <summary>
/// Form1 的摘要说明。
/// </summary>
public class Form1 : System.Windows.Forms.Form
{
/// <summary>
/// 必需的设计器变量。
/// </summary>
private System.ComponentModel.Container components = null;
private Image image;
private RectangleF rect;
public Form1()
{
image = Image.FromFile(@"G:\我的文档\My Pictures\frl1.jpg");
InitializeComponent();
this.BackgroundImage = image;
}
/// <summary>
/// 清理所有正在使用的资源。
/// </summary>
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}
#region Windows 窗体设计器生成的代码
/// <summary>
/// 设计器支持所需的方法 - 不要使用代码编辑器修改
/// 此方法的内容。
/// </summary>
private void InitializeComponent()
{
//
// Form1
//
this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
this.ClientSize = new System.Drawing.Size(616, 446);
this.Name = "Form1";
this.Text = "Form1";
this.Resize += new System.EventHandler(this.Form1_Resize);
this.Load += new System.EventHandler(this.Form1_Load);
this.Paint += new System.Windows.Forms.PaintEventHandler(this.Form1_Paint);
}
#endregion
/// <summary>
/// 应用程序的主入口点。
/// </summary>
[STAThread]
static void Main()
{
Application.Run(new Form1());
}
private void Form1_Load(object sender, System.EventArgs e)
{
try
{
rect = new RectangleF(0,0,this.ClientSize.Width,this.ClientSize.Height);
}
catch(Exception ex)
{
MessageBox.Show(ex.Message);
}
}
private void DrawBackgroudImage()
{
try
{
Graphics g = this.CreateGraphics();
g.DrawImage(image,rect);
g.Dispose();
}
catch(Exception e)
{
MessageBox.Show(e.Message);
}
}
private void Form1_Paint(object sender, System.Windows.Forms.PaintEventArgs e)
{
DrawBackgroudImage();
}
private void Form1_Resize(object sender, System.EventArgs e)
{
rect = new RectangleF(0,0,this.ClientSize.Width,this.ClientSize.Height);
DrawBackgroudImage();
}
}
}
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
namespace WindowsApplication9
{
/// <summary>
/// Form1 的摘要说明。
/// </summary>
public class Form1 : System.Windows.Forms.Form
{
/// <summary>
/// 必需的设计器变量。
/// </summary>
private System.ComponentModel.Container components = null;
private Image image;
private RectangleF rect;
public Form1()
{
image = Image.FromFile(@"G:\我的文档\My Pictures\frl1.jpg");
InitializeComponent();
this.BackgroundImage = image;
}
/// <summary>
/// 清理所有正在使用的资源。
/// </summary>
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}
#region Windows 窗体设计器生成的代码
/// <summary>
/// 设计器支持所需的方法 - 不要使用代码编辑器修改
/// 此方法的内容。
/// </summary>
private void InitializeComponent()
{
//
// Form1
//
this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
this.ClientSize = new System.Drawing.Size(616, 446);
this.Name = "Form1";
this.Text = "Form1";
this.Resize += new System.EventHandler(this.Form1_Resize);
this.Load += new System.EventHandler(this.Form1_Load);
this.Paint += new System.Windows.Forms.PaintEventHandler(this.Form1_Paint);
}
#endregion
/// <summary>
/// 应用程序的主入口点。
/// </summary>
[STAThread]
static void Main()
{
Application.Run(new Form1());
}
private void Form1_Load(object sender, System.EventArgs e)
{
try
{
rect = new RectangleF(0,0,this.ClientSize.Width,this.ClientSize.Height);
}
catch(Exception ex)
{
MessageBox.Show(ex.Message);
}
}
private void DrawBackgroudImage()
{
try
{
Graphics g = this.CreateGraphics();
g.DrawImage(image,rect);
g.Dispose();
}
catch(Exception e)
{
MessageBox.Show(e.Message);
}
}
private void Form1_Paint(object sender, System.Windows.Forms.PaintEventArgs e)
{
DrawBackgroudImage();
}
private void Form1_Resize(object sender, System.EventArgs e)
{
rect = new RectangleF(0,0,this.ClientSize.Width,this.ClientSize.Height);
DrawBackgroudImage();
}
}
}