在Dart (Windows)中,可以使用ffi库来调用Windows API函数,从而获取进程PID。具体步骤如下:
import 'dart:ffi';
导入ffi库。typedef
关键字定义Windows API函数的签名。在这个例子中,我们需要定义EnumProcesses
函数的签名。typedef EnumProcessesC = Int32 Function(Pointer<Uint32> lpidProcess, Uint32 cb, Pointer<Uint32> lpcbNeeded);
typedef EnumProcessesDart = int Function(Pointer<Uint32> lpidProcess, int cb, Pointer<Uint32> lpcbNeeded);
DynamicLibrary
类加载kernel32.dll
,并获取EnumProcesses
函数的引用。final kernel32 = DynamicLibrary.open('kernel32.dll');
final enumProcesses = kernel32.lookupFunction<EnumProcessesC, EnumProcessesDart>('EnumProcesses');
final pidArray = Uint32List(1024);
final pProcessCount = allocate<Uint32>();
enumProcesses(pidArray.pointer, pidArray.length * sizeOf<Uint32>(), pProcessCount);
final processCount = pProcessCount.value;
for (var i = 0; i < processCount; i++) {
final pid = pidArray[i];
print('Process PID: $pid');
}
完整的代码示例:
import 'dart:ffi';
import 'dart:typed_data';
typedef EnumProcessesC = Int32 Function(Pointer<Uint32> lpidProcess, Uint32 cb, Pointer<Uint32> lpcbNeeded);
typedef EnumProcessesDart = int Function(Pointer<Uint32> lpidProcess, int cb, Pointer<Uint32> lpcbNeeded);
void main() {
final kernel32 = DynamicLibrary.open('kernel32.dll');
final enumProcesses = kernel32.lookupFunction<EnumProcessesC, EnumProcessesDart>('EnumProcesses');
final pidArray = Uint32List(1024);
final pProcessCount = allocate<Uint32>();
enumProcesses(pidArray.pointer, pidArray.length * sizeOf<Uint32>(), pProcessCount);
final processCount = pProcessCount.value;
for (var i = 0; i < processCount; i++) {
final pid = pidArray[i];
print('Process PID: $pid');
}
}
这个例子中,我们使用了ffi库来调用Windows API函数EnumProcesses
,获取了当前系统中所有进程的PID。你可以根据需要进一步扩展代码,例如根据PID获取进程的详细信息等。
腾讯云相关产品和产品介绍链接地址:
请注意,以上链接仅为示例,具体产品选择应根据实际需求和情况进行评估。
没有搜到相关的结果
领取专属 10元无门槛券
手把手带您无忧上云