private static bool TryToActivateAnotherInstance()
{
try
{
var currentProcess = Process.GetCurrentProcess();
var prc = Process.GetProcessesByName(currentProcess.ProcessName);
if (prc.Length > 0)
{
foreach (var process in prc)
{
if (process.Id != currentProcess.Id && process.MainWindowHandle != IntPtr.Zero)
{
WinApiDllImports.ShowWindow(process.MainWindowHandle, 1);
WinApiDllImports.SetForegroundWindow(process.MainWindowHandle);
return(true);
}
}
}
return(false);
}
catch (Exception ex)
{
log.Error(ex, "Error while trying to activate another isntance: {0}.", ex.Message);
return(false);
}
}
public void UnregisterHotKeys()
{
// unregister all the registered hot keys.
for (int i = _currentId; i > 0; i--)
{
WinApiDllImports.UnregisterHotKey(_window.Handle, i);
}
}
private static void LaunchApplication()
{
if (Environment.OSVersion.Version.Major >= 6)
{
WinApiDllImports.SetProcessDPIAware();
}
Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(false);
Application.Run(new MainForm());
}
/// <summary>
/// Registers a hot key in the system.
/// </summary>
/// <param name="modifier">The modifiers that are associated with the hot key.</param>
/// <param name="key">The key itself that is associated with the hot key.</param>
public void RegisterHotKey(ModifierKeys modifier, Keys key)
{
// increment the counter.
_currentId = _currentId + 1;
// register the hot key.
if (!WinApiDllImports.RegisterHotKey(_window.Handle, _currentId, (uint)modifier, (uint)key))
{
throw new InvalidOperationException("Couldn’t register the hot key.");
}
}
private string GetCaptionOfWindow(IntPtr hwnd)
{
try
{
int max_length = WinApiDllImports.GetWindowTextLength(hwnd);
var windowText = new StringBuilder("", max_length + 5);
WinApiDllImports.GetWindowText(hwnd, windowText, max_length + 2);
return(windowText.ToString());
}
catch (Exception ex)
{
LogManager.GetCurrentClassLogger().Error(ex, "Error getting window caption: {0}.", ex.Message);
throw ex;
}
}
// https://code.msdn.microsoft.com/windowsapps/C-Getting-the-Windows-da1bd524
public GuiWindowInfo GetWindowUnderMouse()
{
IntPtr windowHandle = this.GetTopmostWindowHandleUnderTheMouse();
if (windowHandle == IntPtr.Zero)
{
return(null);
}
uint processId = 0;
WinApiDllImports.GetWindowThreadProcessId(windowHandle, out processId);
Process process = Process.GetProcessById((int)processId);
string windowTitle = this.GetCaptionOfWindow(windowHandle);
return(new GuiWindowInfo(windowHandle, windowTitle, process));
}
private IntPtr GetTopmostWindowHandleUnderTheMouse()
{
WinApiDllImports.POINT p = new WinApiDllImports.POINT();
bool retVal = WinApiDllImports.GetCursorPos(ref p);
if (retVal)
{
IntPtr hwnd = WinApiDllImports.WindowFromPoint(p);
if (hwnd.ToInt64() > 0)
{
var result = hwnd;
while (WinApiDllImports.GetParent(hwnd).ToInt64() > 0)
{
hwnd = WinApiDllImports.GetParent(hwnd);
}
Debug.Assert(hwnd != IntPtr.Zero && hwnd.ToInt64() > 0, "Invalid window handle");
return(hwnd);
}
}
return(IntPtr.Zero);
}
public static void SetTitleByMainWindowHandle(IntPtr mainWindowHandle, string newTitle)
{
WinApiDllImports.SetWindowText(mainWindowHandle, newTitle);
}
