private void Form1_Load(object sender, EventArgs e)
{
TransparencyKey = Color.White;
Image BackgroundImage = Bitmap.FromFile("E:\\DDD.jpg");
BitmapRegion BitmapRegion = new BitmapRegion();//此為生成不規則窗體和控件的類
BitmapRegion.CreateControlRegion(this, new Bitmap("E:\\DDD.jpg"));
}
BitmapRegion.cs:
using System;
using System.Collections.Generic;
using System.Text;
using System.Windows.Forms;
using System.Drawing;
using System.Drawing.Drawing2D;
namespace WindowsApplication9
{
class BitmapRegion
{
public BitmapRegion() { }
/// <summary>
/// Create and apply the region on the supplied control
/// 創建支持位圖區域的控件（目前有button和form）
/// </summary>
///
/// <param name="control">The Control object to apply the region to控件</param>
/// <param name="bitmap">The Bitmap object to create the region from位圖</param>
public static void CreateControlRegion(Control control, Bitmap bitmap)
{
// Return if control and bitmap are null
//判斷是否存在控件和位圖
if (control == null || bitmap == null)
return;
// Set our control''s size to be the same as the bitmap
//設置控件大小為位圖大小
control.Width = bitmap.Width;
control.Height = bitmap.Height;
// Check if we are dealing with Form here
//當控件是form時
if (control is System.Windows.Forms.Form)
{
// Cast to a Form object
//強制轉換為FORM
Form form = (Form)control;
// Set our form''s size to be a little larger that the bitmap just
// in case the form''s border style is not set to none in the first place
//當FORM的邊界FormBorderStyle不為NONE時，應將FORM的大小設置成比位圖大小稍大一點
form.Width = control.Width;
form.Height = control.Height;
// No border
//沒有邊界
form.FormBorderStyle = FormBorderStyle.None;
// Set bitmap as the background image
//將位圖設置成窗體背景圖片
form.BackgroundImage = bitmap;
// Calculate the graphics path based on the bitmap supplied
//計算位圖中不透明部分的邊界
GraphicsPath graphicsPath = CalculateControlGraphicsPath(bitmap);
// Apply new region
//應用新的區域
form.Region = new Region(graphicsPath);
}
// Check if we are dealing with Button here
//當控件是button時
else if (control is System.Windows.Forms.Button)
{
// Cast to a button object
//強制轉換為 button
Button button = (Button)control;
// Do not show button text
//不顯示button text
button.Text = "";
// Change cursor to hand when over button
//改變 cursor的style
button.Cursor = Cursors.Hand;
// Set background image of button
//設置button的背景圖片
button.BackgroundImage = bitmap;
// Calculate the graphics path based on the bitmap supplied
//計算位圖中不透明部分的邊界
GraphicsPath graphicsPath = CalculateControlGraphicsPath(bitmap);
// Apply new region
//應用新的區域
button.Region = new Region(graphicsPath);
}
}
/// <summary>
/// Calculate the graphics path that representing the figure in the bitmap
/// excluding the transparent color which is the top left pixel.
/// //計算位圖中不透明部分的邊界
/// </summary>
/// <param name="bitmap">The Bitmap object to calculate our graphics path from</param>
/// <returns>Calculated graphics path</returns>
private static GraphicsPath CalculateControlGraphicsPath(Bitmap bitmap)
{
// Create GraphicsPath for our bitmap calculation
//創建 GraphicsPath
GraphicsPath graphicsPath = new GraphicsPath();
// Use the top left pixel as our transparent color
//使用左上角的一點的顏色作為我們透明色
Color colorTransparent = bitmap.GetPixel(0, 0);
// This is to store the column value where an opaque pixel is first found.
// This value will determine where we start scanning for trailing opaque pixels.
//第一個找到點的X
int colOpaquePixel = 0;
// Go through all rows (Y axis)
// 偏歷所有行（Y方向）
for (int row = 0; row < bitmap.Height; row++)
{
// Reset value
//重設
colOpaquePixel = 0;
// Go through all columns (X axis)
//偏歷所有列（X方向）
for (int col = 0; col < bitmap.Width; col++)
{
// If this is an opaque pixel, mark it and search for anymore trailing behind
//如果是不需要透明處理的點則標記，然后繼續偏歷
if (bitmap.GetPixel(col, row) != colorTransparent)
{
// Opaque pixel found, mark current position
//記錄當前
colOpaquePixel = col;
// Create another variable to set the current pixel position
//建立新變量來記錄當前點
int colNext = col;
// Starting from current found opaque pixel, search for anymore opaque pixels
// trailing behind, until a transparent pixel is found or minimum width is reached
//從找到的不透明點開始，繼續尋找不透明點,一直到找到或則達到圖片寬度
for (colNext = colOpaquePixel; colNext < bitmap.Width; colNext++)
if (bitmap.GetPixel(colNext, row) == colorTransparent)
break;
// Form a rectangle for line of opaque pixels found and add it to our graphics path
//將不透明點加到graphics path
graphicsPath.AddRectangle(new Rectangle(colOpaquePixel, row, colNext - colOpaquePixel, 1));
// No need to scan the line of opaque pixels just found
col = colNext;
}
}
}
// Return calculated graphics path
return graphicsPath;
}
}
}
添加關閉、最大最小化、移動
1、首先，關閉很簡單，只需要在您的事件中加入
復制C#代碼保存代碼
this.Close();//關閉此窗體
//或
Application.Exit();//退出應用程序
2、最大最小化事件也很簡單
復制C#代碼保存代碼
this.WindowState=FormWindowState.Minimized;//窗口最小化
this.WindowState=FormWindowState.Maximized;//窗口最大化
3.移動
首先要添加變量；
private Point mouseOffset; //記錄鼠標指針的坐標
private bool isMouseDown = false; //記錄鼠標按鍵是否按下
添加事件
private void Form1_MouseDown(object sender, MouseEventArgs e)
{
int xOffset;
int yOffset;
if (e.Button == MouseButtons.Left)
{
xOffset = -e.X - SystemInformation.FrameBorderSize.Width;
yOffset = -e.Y - SystemInformation.CaptionHeight -
SystemInformation.FrameBorderSize.Height;
mouseOffset = new Point(xOffset, yOffset);
isMouseDown = true;
}
}
private void Form1_MouseMove(object sender, MouseEventArgs e)
{
if (isMouseDown)
{
Point mousePos = Control.MousePosition;
mousePos.Offset(mouseOffset.X, mouseOffset.Y);
Location = mousePos;
}
}
private void Form1_MouseUp(object sender, MouseEventArgs e)
{
// 修改鼠標狀態isMouseDown的值
// 確保只有鼠標左鍵按下並移動時，才移動窗體
if (e.Button == MouseButtons.Left)
{
isMouseDown = false;
}
}