public static extern uint GetGUIThreadInfo(uint dwthreadid, ref GUITHREADINFO lpguithreadinfo);
void updateIMEStatusInfo(ref IMEStatusInfo status) {
// 【C#,WinAPI】バックグラウンドで現在のIME状態を取得 - 行き当たりばったり
// http://sturnus.hateblo.jp/entry/2014/05/10/234603
GUITHREADINFO gti = new GUITHREADINFO();
gti.cbSize = Marshal.SizeOf(gti);
if (WinApi.GetGUIThreadInfo(0, ref gti) != 0) {
bool windowVisible = WinApi.IsWindowVisible(gti.hwndActive);
bool windowSwitched = (status.WindowHandle != gti.hwndActive);
bool focusSwitched = (status.ClientHandle != gti.hwndFocus);
if (windowSwitched) {
status.WindowText = WinApi.GetWindowText(gti.hwndActive);
try {
status.ExecutableFileName = WinApi.GetExecutableFileNameFromWindowHandle(gti.hwndActive);
}
catch {
status.ExecutableFileName = string.Empty;
}
}
if (focusSwitched) {
status.ClientClassName = WinApi.GetClassName(gti.hwndFocus);
}
if (windowVisible) {
IntPtr hWndIME = WinApi.ImmGetDefaultIMEWnd(gti.hwndFocus);
status.IMEEnabled = (WinApi.SendMessage(hWndIME, 0x283, 0x5, 0) != 0);
status.ClientBounds = WinApi.GetWindowRect(gti.hwndFocus);
}
if (windowSwitched || focusSwitched) {
// 無視リストに当たった場合は無かったことにする
bool ignored = false;
foreach (var regex in _cachedIgnoreList) {
if (regex.IsMatch(status.ExecutableFileName) ||
regex.IsMatch(status.WindowText) ||
regex.IsMatch(status.ClientClassName)) {
ignored = true;
break;
}
}
status.Ignored = ignored;
}
status.WindowHandle = gti.hwndActive;
status.ClientHandle = gti.hwndFocus;
status.WindowVisible = windowVisible;
}
}