不規則窗體
主要用控件的
Region
屬性。效果如下
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Drawing.Drawing2D;
using System.Runtime.InteropServices;
namespace WindowsApplication22
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
//重新繪制視窗樣式
string fileName = @"bg.jpg";
Bitmap mybitmap = new Bitmap(fileName);
CreateControlRegion(this, mybitmap);
this.BackColor = Color.White;// 此處為添加部分
this.TransparencyKey = Color.White;//此處為添加部分
CreateControlRegion(button1, mybitmap);
int btnWidth = button1.Width;
int btnHeight = button1.Height;
button1.Width = btnWidth / 2;
button1.Height = btnHeight / 6;
button1.Location = new Point((this.Width - button1.Width) / 2, (this.Height - button1.Height) / 2 - button1.Height);
button1.Font = new System.Drawing.Font("微軟雅黑", 20);
button1.Text = "Button";
}
/// <summary>
/// 重新繪制視窗樣式
/// </summary>
/// <param name="control"></param>
/// <param name="bitmap"></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;
//設定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;
//當FORM的邊界FormBorderStyle不為NONE時,應将FORM的大小設定成比位圖大小稍大一點
form.Width = control.Width;
form.Height = control.Height;
//沒有邊界
form.FormBorderStyle = FormBorderStyle.None;
//将位圖設定成窗體背景圖檔
form.BackgroundImage = bitmap;
//計算位圖中不透明部分的邊界
GraphicsPath graphicsPath = CalculateControlGraphicsPath(bitmap);
//應用新的區域
form.Region = new Region(graphicsPath);
// 以下為自己添加的語句,不添加此兩句會出現問題
form.Width = bitmap.Width;
form.Height = bitmap.Height;
}
//當控件是button時
else if (control is System.Windows.Forms.Button)
{
//強制轉換為 button
Button button = (Button)control;
//不顯示button text
button.Text = "";
//改變 cursor的style
button.Cursor = Cursors.Hand;
//設定button的背景圖檔
button.BackgroundImage = bitmap;
//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);
button.Width = bitmap.Width;
button.Height = bitmap.Height;
button.FlatStyle = FlatStyle.Popup;//此處為添加部分
}
}
private static GraphicsPath CalculateControlGraphicsPath(Bitmap bitmap)
{
//建立 GraphicsPath
GraphicsPath graphicsPath = new GraphicsPath();
//使用左上角的一點的顔色作為我們透明色
Color colorTransparent = bitmap.GetPixel(0, 0);
//第一個找到點的X
int colOpaquePixel = 0;
// 偏曆所有行(Y方向)
for (int row = 0; row < bitmap.Height - 1; row++)
{
// Reset value
//重設
colOpaquePixel = 0;
//偏曆所有列(X方向)
for (int col = 0; col < bitmap.Width - 1; col++)
{
//如果是不需要透明處理的點則标記,然後繼續偏曆
if (bitmap.GetPixel(col, row) != colorTransparent)
{
colOpaquePixel = col;
//建立新變量來記錄目前點
int colNext = col;
///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檔寬度
for (colNext = colOpaquePixel; colNext < bitmap.Width; colNext++)
{
Color gpi = bitmap.GetPixel(colNext, row);
if (bitmap.GetPixel(colNext, row) == colorTransparent)
{
break;
}
}
//将不透明點加到graphics path
{
graphicsPath.AddRectangle(new Rectangle(colOpaquePixel, row, colNext - colOpaquePixel, 1));
}
col = colNext;
}
}
}
return graphicsPath;
}
private void Form1_MouseDown(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Left)
{
ReleaseCapture();
SendMessage(base.Handle, 0x112, 0xf012, 0);
}
}
[DllImport("user32.dll")]
public static extern bool ReleaseCapture();
[DllImport("user32.dll")]
public static extern bool SendMessage(IntPtr hwnd, int wMsg, int wParam, int IParam);
private void button1_Click(object sender, EventArgs e)
{
Close();
}
}
}