我编写了一个小应用程序,它可以在 C# 中禁用 Windows 操作系统 的所有窗口的标题栏和任务栏图标。代码如下:
using System;
using System.Runtime.InteropServices;
using System.Windows.Forms;
namespace IconKiller
{
class Program
{
/// Import the needed Windows-API functions:
// ... for enumerating all running desktop windows
[DllImport("user32.dll")]
static extern bool EnumDesktopWindows(IntPtr hDesktop, EnumDesktopWindowsDelegate lpfn, IntPtr lParam);
private delegate bool EnumDesktopWindowsDelegate(IntPtr hWnd, int lParam);
// ... for loading an icon
[DllImport("user32.dll")]
static extern IntPtr LoadImage(IntPtr hInst, string lpsz, uint uType, int cxDesired, int cyDesired, uint fuLoad);
// ... for sending messages to other windows
[DllImport("user32.dll")]
static extern IntPtr SendMessage(IntPtr hWnd, uint Msg, int wParam, IntPtr lParam);
/// Setup global variables
// Pointer to empty icon used to replace all other application icons
static IntPtr m_pIcon = IntPtr.Zero;
// Windows API standard values
const int IMAGE_ICON = 1;
const int LR_LOADFROMFILE = 0x10;
const int WM_SETICON = 0x80;
const int ICON_SMALL = 0;
static void Main(string[] args)
{
// Load the empty icon
string strIconFilePath = @"blank.ico";
m_pIcon = LoadImage(IntPtr.Zero, strIconFilePath, IMAGE_ICON, 16, 16, LR_LOADFROMFILE);
// Setup the break condition for the loop
int counter = 0;
int max = 10 * 60 * 60;
// Loop to catch new opened windows
while (counter < max)
{
// enumerate all desktop windows
EnumDesktopWindows(IntPtr.Zero, new EnumDesktopWindowsDelegate(EnumDesktopWindowsCallback), IntPtr.Zero);
counter++;
System.Threading.Thread.Sleep(100);
}
// ... then restart application
Application.Restart();
}
private static bool EnumDesktopWindowsCallback(IntPtr hWnd, int lParam)
{
// Replace window icon
SendMessage(hWnd, WM_SETICON, ICON_SMALL, m_pIcon);
return true;
}
}
}
此代码似乎适用于 native Windows 应用程序。我现在唯一的问题是,Java 显然使用其应用程序图标的不同实例来显示在任务栏中。这意味着我的小应用程序删除了 Java 程序标题栏中的图标,但没有删除任务栏中的图标(Netbeans 就是一个很好的例子)。
如何解决这个问题?是否可以通过 JVM 将消息传递给这些程序,类似于我在 windows API 中使用的技巧,在运行 Java 应用程序时调用 JFrame.setIconImage()
或类似的东西?
编辑:我不仅限于 C#,我非常愿意在 java 中编写类似“帮助”应用程序的东西,如果有必要,我会在我的主应用程序中执行。
最佳答案
问题在于使用 EnumDesktopWindows而不是 EnumWindows .以下代码在我的电脑上运行良好:
using System;
using System.Runtime.InteropServices;
namespace IconKiller
{
class Program
{
/// Import the needed Windows-API functions:
// ... for enumerating all running desktop windows
[DllImport("user32.dll")]
static extern bool EnumWindows(EnumDesktopWindowsDelegate lpfn, IntPtr lParam);
private delegate bool EnumDesktopWindowsDelegate(IntPtr hWnd, int lParam);
// ... for loading an icon
[DllImport("user32.dll")]
static extern IntPtr LoadImage(IntPtr hInst, string lpsz, uint uType, int cxDesired, int cyDesired, uint fuLoad);
// ... for sending messages to other windows
[DllImport("user32.dll")]
static extern IntPtr SendMessage(IntPtr hWnd, uint Msg, int wParam, IntPtr lParam);
/// Setup global variables
// Pointer to empty icon used to replace all other application icons
static IntPtr m_pIcon = IntPtr.Zero;
// Windows API standard values
const int IMAGE_ICON = 1;
const int LR_LOADFROMFILE = 0x10;
const int WM_SETICON = 0x80;
const int ICON_SMALL = 0;
static void Main(string[] args)
{
// Load the empty icon
string strIconFilePath = @"C:\clicknrun.ico";
m_pIcon = LoadImage(IntPtr.Zero, strIconFilePath, IMAGE_ICON, 16, 16, LR_LOADFROMFILE);
// Setup the break condition for the loop
int counter = 0;
int max = 10 * 60 * 60;
// Loop to catch new opened windows
while (counter < max)
{
// enumerate all desktop windows
EnumWindows((EnumDesktopWindowsCallback), IntPtr.Zero);
counter++;
System.Threading.Thread.Sleep(100);
}
// ... then restart application
Console.WriteLine("done");
Console.ReadLine();
}
private static bool EnumDesktopWindowsCallback(IntPtr hWnd, int lParam)
{
// Replace window icon
SendMessage(hWnd, WM_SETICON, ICON_SMALL, m_pIcon);
return true;
}
}
}
关于c# - 如何在 Windows 7 上删除 Java 程序的标题栏和任务栏图标?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/8927416/