很长一段时间都没有回复,所以叹了口气。我决定使用 C++/JNI 来解决它,反射如下:
在 Java 方面:
package apptotray;
import java.awt.*;
import java.io.File;
import java.nio.file.Paths;
import javax.swing.*;
public class AppToTray {
public static void main(String[] args) {
JFrame frame = new JFrame("Some Window");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setLayout(new BorderLayout());
frame.add(new JPanel(), BorderLayout.CENTER);
frame.setPreferredSize(new Dimension(500, 500));
frame.pack();
frame.setVisible(true);
System.load(new File("JNI.dll").getAbsolutePath());
try {
System.out.println("Icon is showing..");
Thread.sleep(3000);
} catch (Exception Ex) {
Ex.printStackTrace();
}
removeFromTaskBar(getWindowHandle(frame));
try {
System.out.println("Icon is not showing..");
Thread.sleep(3000);
} catch (Exception Ex) {
Ex.printStackTrace();
}
addToTaskBar(getWindowHandle(frame));
System.out.println("Icon is showing again..");
}
public static native void addToTaskBar(long WindowHandle);
public static native void removeFromTaskBar(long WindowHandle);
public static long getWindowHandle(java.awt.Frame frame) {
return (Long)invokeMethod(invokeMethod(frame, "getPeer"), "getHWnd");
}
protected static Object invokeMethod(Object o, String methodName) {
Class c = o.getClass();
for (java.lang.reflect.Method m : c.getMethods()) {
if (m.getName().equals(methodName)) {
try {
return m.invoke(o);
} catch (IllegalAccessException | IllegalArgumentException | java.lang.reflect.InvocationTargetException Ex) {
Ex.printStackTrace();
break;
}
}
}
return null;
}
}
在 JNI/C++ 端(Main.cpp):
#include <windows.h>
#include <shobjidl.h>
#include "jni.h"
#if defined _WIN32 || defined _WIN64
extern "C"
{
const GUID CLSID_TaskbarList = {0x56FDF344, 0xFD6D, 0x11D0, {0x95, 0x8A, 0x00, 0x60, 0x97, 0xC9, 0xA0, 0x90}};
const GUID IID_ITaskbarList = {0x56FDF342, 0xFD6D, 0x11D0, {0x95, 0x8A, 0x00, 0x60, 0x97, 0xC9, 0xA0, 0x90}};
const GUID IID_ITaskbarList2 = {0x602D4995, 0xB13A, 0x429b, {0xA6, 0x6E, 0x19, 0x35, 0xE4, 0x4F, 0x43, 0x17}};
const GUID IID_ITaskList3 = {0xEA1AFB91, 0x9E28, 0x4B86, {0x90, 0xE9, 0x9E, 0x9F, 0x8A, 0x5E, 0xEF, 0xAF}};
}
#endif
extern "C" JNIEXPORT void JNICALL Java_apptotray_AppToTray_addToTaskBar(JNIEnv *, jclass, jlong WindowHandle)
{
#if defined _WIN32 || defined _WIN64
ITaskbarList* TaskListPtr;
CoInitialize(nullptr);
long Result = !CoCreateInstance(CLSID_TaskbarList, nullptr, CLSCTX_SERVER, IID_ITaskbarList, reinterpret_cast<void**>(&TaskListPtr));
if (Result) TaskListPtr->AddTab(reinterpret_cast<HWND>(WindowHandle));
TaskListPtr->Release();
CoUninitialize();
#endif
}
extern "C" JNIEXPORT void JNICALL Java_apptotray_AppToTray_removeFromTaskBar(JNIEnv *, jclass, jlong WindowHandle)
{
#if defined _WIN32 || defined _WIN64
ITaskbarList* TaskListPtr;
CoInitialize(nullptr);
long Result = !CoCreateInstance(CLSID_TaskbarList, nullptr, CLSCTX_SERVER, IID_ITaskbarList, reinterpret_cast<void**>(&TaskListPtr));
if (Result) TaskListPtr->DeleteTab(reinterpret_cast<HWND>(WindowHandle));
TaskListPtr->Release();
CoUninitialize();
#endif
}
extern "C" bool __stdcall DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
{
switch (fdwReason)
{
case DLL_PROCESS_ATTACH:
// attach to process
// return FALSE to fail DLL load
break;
case DLL_PROCESS_DETACH:
// detach from process
break;
case DLL_THREAD_ATTACH:
// attach to thread
break;
case DLL_THREAD_DETACH:
// detach from thread
break;
}
return TRUE; // succesful
}
使用以下命令编译 DLL:
x86_64-w64-mingw32-g++.exe -O2 -Wall -DBUILD_DLL -std=c++11 -c C:\Users\Brandon\Desktop\JNI\main.cpp -o obj\Release\main.o
x86_64-w64-mingw32-g++.exe -shared -Wl,--output-def=bin\Release\libJNI.def -Wl,--out-imlib=bin\Release\libJNI.a -Wl,--dll obj \Release\main.o -o bin\Release\JNI.dll -s -static -static-libgcc -static-libstdc++ -lole32 -lshell32 -luser32
或者只是使用代码块来做到这一点。
如果其他人有更好的想法,请随时添加它们或评论或任何东西。我仍然不敢相信我必须使用 C++/JNI 和反射来做到这一点。荒谬。现在是 2013 年,Java 需要得到这个程序。