From: Hannah von Reth <hannah.vonreth@owncloud.com>
Date: Tue, 24 Mar 2020 11:01:04 +0000 (+0100)
Subject: [Gui] Implement raiseDialog on Windows
X-Git-Tag: archive/raspbian/3.16.7-1_deb13u1+rpi1~1^2~12^2~21^2~468^2~123
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=bcceb5c33df936b91a823868d1b4ebc935b1e96a;p=nextcloud-desktop.git

[Gui] Implement raiseDialog on Windows

Issue: #7774
---

diff --git a/src/gui/owncloudgui.cpp b/src/gui/owncloudgui.cpp
index d650b96e4..c70c57bd7 100644
--- a/src/gui/owncloudgui.cpp
+++ b/src/gui/owncloudgui.cpp
@@ -614,6 +614,22 @@ void ownCloudGui::raiseDialog(QWidget *raiseWidget)
             False, // propagate
             SubstructureRedirectMask | SubstructureNotifyMask,
             &e);
+
+#elif defined(Q_OS_WIN)
+        // Windows disallows raising a Window when you're not the active application.
+        // Use a common hack to attach to the active application
+        const auto activeProcessId = GetWindowThreadProcessId(GetForegroundWindow(), nullptr);
+        if (activeProcessId != qApp->applicationPid()) {
+            const auto threadId = GetCurrentThreadId();
+            // don't step here with a debugger...
+            if (AttachThreadInput(threadId, activeProcessId, true))
+            {
+                const auto hwnd = reinterpret_cast<HWND>(raiseWidget->winId());
+                SetForegroundWindow(hwnd);
+                SetWindowPos(hwnd, HWND_TOP, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE | SWP_NOACTIVATE);
+                AttachThreadInput(threadId, activeProcessId, false);
+            }
+        }
 #endif
     }
 }