UI: Better Hide OBS Window description, add first time dialog & tooltip

UI/data/locale/en-US.ini

@@ -778,7 +778,9 @@ Basic.Settings.General.Theme="Theme"
 Basic.Settings.General.Language="Language"
 Basic.Settings.General.EnableAutoUpdates="Automatically check for updates on startup"
 Basic.Settings.General.OpenStatsOnStartup="Open stats dialog on startup"
-Basic.Settings.General.HideOBSWindowsFromCapture="Hide OBS windows from display capture"
+Basic.Settings.General.HideOBSWindowsFromCapture="Hide OBS windows from screen capture"
+Basic.Settings.General.HideOBSWindowsFromCapture.Tooltip="This setting will hide all non-projector OBS Studio windows from being captured by OBS and affects \nother applications, such as conferencing, screen sharing, remote support, screenshots, and other capture software."
+Basic.Settings.General.HideOBSWindowsFromCapture.Message="Enabling this option hides all non-projector OBS Studio windows from being captured by OBS and affects other applications, such as conferencing, screen sharing, remote support, screenshots, and other capture software."
 Basic.Settings.General.WarnBeforeStartingStream="Show confirmation dialog when starting streams"
 Basic.Settings.General.WarnBeforeStoppingStream="Show confirmation dialog when stopping streams"
 Basic.Settings.General.WarnBeforeStoppingRecord="Show confirmation dialog when stopping recording"

UI/forms/OBSBasicSettings.ui

@@ -250,6 +250,9 @@
                      <property name="text">
                       <string>Basic.Settings.General.HideOBSWindowsFromCapture</string>
                      </property>
+                     <property name="toolTip">
+                      <string>Basic.Settings.General.HideOBSWindowsFromCapture.Tooltip</string>
+                     </property>
                     </widget>
                    </item>
                   </layout>

UI/window-basic-settings.cpp

@@ -1241,6 +1241,9 @@ void OBSBasicSettings::LoadGeneralSettings()
 			config_get_bool(GetGlobalConfig(), "BasicWindow",
 					"HideOBSWindowsFromCapture");
 		ui->hideOBSFromCapture->setChecked(hideWindowFromCapture);
+
+		connect(ui->hideOBSFromCapture, SIGNAL(stateChanged(int)), this,
+			SLOT(HideOBSWindowWarning(int)));
 	}
 #endif
 
@@ -4209,6 +4212,24 @@ void OBSBasicSettings::SpeakerLayoutChanged(int idx)
 	}
 }
 
+void OBSBasicSettings::HideOBSWindowWarning(int state)
+{
+	if (loading || state == Qt::Unchecked)
+		return;
+
+	if (config_get_bool(GetGlobalConfig(), "General",
+			    "WarnedAboutHideOBSFromCapture"))
+		return;
+
+	OBSMessageBox::information(
+		this, QTStr("Basic.Settings.General.HideOBSWindowsFromCapture"),
+		QTStr("Basic.Settings.General.HideOBSWindowsFromCapture.Message"));
+
+	config_set_bool(GetGlobalConfig(), "General",
+			"WarnedAboutHideOBSFromCapture", true);
+	config_save_safe(GetGlobalConfig(), "tmp", nullptr);
+}
+
 /*
  * resets current bitrate if too large and restricts the number of bitrates
  * displayed when multichannel OFF

UI/window-basic-settings.hpp

@@ -368,6 +368,7 @@ private slots:
 	void on_disableOSXVSync_clicked();
 
 	void GeneralChanged();
+	void HideOBSWindowWarning(int state);
 	void AudioChanged();
 	void AudioChangedRestart();
 	void ReloadAudioSources();