我有这个代码:
const UInt32 WM_KEYDOWN = 0x0100;
const int VK_DOWN = 0x28;
const int VK_UP = 0x26;
[DllImport("user32.dll")]
static extern bool PostMessage(IntPtr hWnd, UInt32 Msg, int wParam, int lParam);
[DllImport("user32.dll")]
private static extern IntPtr GetForegroundWindow();
[DllImport("user32.dll")]
private static extern Int32 GetWindowThreadProcessId(IntPtr hWnd, out uint lpdwProcessId);
private static Process GetProcessByHandle(IntPtr hwnd)
{
try
{
uint processID;
GetWindowThreadProcessId(hwnd, out processID);
return Process.GetProcessById((int)processID);
}
catch { return null; }
}
public static Process GetActiveProcess()
{
IntPtr hwnd = GetForegroundWindow();
return hwnd != null ? GetProcessByHandle(hwnd) : null;
}
public static void KeyUp()
{
PostMessage(GetActiveProcess().MainWindowHandle, WM_KEYDOWN, VK_UP, 0);
}
public static void KeyDown()
{
PostMessage(GetActiveProcess().MainWindowHandle, WM_KEYDOWN, VK_DOWN, 0);
}
当我调用 KeyUp/KeyDown 时,它仅适用于某些进程,如文本编辑、视觉工作室等进程。
但不适用于 Explorer.exe、iTunes.exe、Chrome.exe、Outlook.exe、FileZilla.exe 等。
我在控制台上运行调试:
while (true)
{
Process currentProcess = GetActiveProcess();
if (currentProcess != null)
Console.WriteLine(currentProcess.MainWindowTitle);
Thread.Sleep(1000);
}
这是我从一些应用程序中得到的:
ProjName - Microsoft Visual Studio (Administrator)
?PostMessage to Current Active Proccess doesn't work for all proccess ? - StackOverFlow - Google Chrome?
FileZilla
Inbox - Outlook Data File - Microsoft Outlook
在 Explorer.exe 上我得到空行..