也许这会有所帮助: http: //blog.csharphelper.com/2011/03/03/add-uac-shields-to-buttons-menu-items-and-picture-boxes-in-c.aspx
它采用 UAC 屏蔽并返回一个位图,该位图可以放置在任何支持位图的东西上。
编辑:这是一些可以工作的粗略示例代码:
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Runtime.InteropServices;
namespace UAC_Test
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
[DllImport("user32.dll")]
public static extern int SendMessage(IntPtr hWnd, uint Msg, int wParam, int lParam);
// Make the button display the UAC shield.
public static void AddShieldToButton(Button btn)
{
const Int32 BCM_SETSHIELD = 0x160C;
// Give the button the flat style and make it display the UAC shield.
btn.FlatStyle = System.Windows.Forms.FlatStyle.System;
SendMessage(btn.Handle, BCM_SETSHIELD, 0, 1);
}
// Return a bitmap containing the UAC shield.
private static Bitmap shield_bm = null;
public static Bitmap GetUacShieldImage()
{
if (shield_bm != null) return shield_bm;
const int WID = 50;
const int HGT = 50;
const int MARGIN = 4;
// Make the button. For some reason, it must
// have text or the UAC shield won't appear.
Button btn = new Button();
btn.Text = " ";
btn.Size = new Size(WID, HGT);
AddShieldToButton(btn);
// Draw the button onto a bitmap.
Bitmap bm = new Bitmap(WID, HGT);
btn.Refresh();
btn.DrawToBitmap(bm, new Rectangle(0, 0, WID, HGT));
// Find the part containing the shield.
int min_x = WID, max_x = 0, min_y = HGT, max_y = 0;
// Fill on the left.
for (int y = MARGIN; y < HGT - MARGIN; y++)
{
// Get the leftmost pixel's color.
Color target_color = bm.GetPixel(MARGIN, y);
// Fill in with this color as long as we see the target.
for (int x = MARGIN; x < WID - MARGIN; x++)
{
// See if this pixel is part of the shield.
if (bm.GetPixel(x, y).Equals(target_color))
{
// It's not part of the shield.
// Clear the pixel.
bm.SetPixel(x, y, Color.Transparent);
}
else
{
// It's part of the shield.
if (min_y > y) min_y = y;
if (min_x > x) min_x = x;
if (max_y < y) max_y = y;
if (max_x < x) max_x = x;
}
}
}
// Clip out the shield part.
int shield_wid = max_x - min_x + 1;
int shield_hgt = max_y - min_y + 1;
shield_bm = new Bitmap(shield_wid, shield_hgt);
Graphics shield_gr = Graphics.FromImage(shield_bm);
shield_gr.DrawImage(bm, 0, 0,
new Rectangle(min_x, min_y, shield_wid, shield_hgt),
GraphicsUnit.Pixel);
// Return the shield.
return shield_bm;
}
private void Form1_Load(object sender, EventArgs e)
{
Graphics gfx = Graphics.FromImage(button1.BackgroundImage);
Bitmap shield = GetUacShieldImage();
gfx.DrawImage(shield, button1.Width / 2, button1.Height / 2);
}
}
}
这是在背景图像上绘制 UAC 盾牌。您可以调整按钮顶部的图像位置。它看起来不像系统 UAC 盾牌那么漂亮,但它确实在背景图像的顶部显示了 UAC 盾牌图标。