UI: Add option to disable aero on windows vista/7

On windows vista/7, you cannot really use display capture efficiently
without disabling aero, so this will add an option to settings to allow
it to be disabled and cause it to be disabled on startup.

obs/data/locale/en-US.ini

@@ -324,6 +324,7 @@ Basic.Settings.Video.Denominator="Denominator:"
 Basic.Settings.Video.Renderer="Renderer:"
 Basic.Settings.Video.InvalidResolution="Invalid resolution value.  Must be [width]x[height] (i.e. 1920x1080)"
 Basic.Settings.Video.CurrentlyActive="Video output is currently active.  Please turn off any outputs to change video settings."
+Basic.Settings.Video.DisableAero="Disable Aero"
 
 # scale filters
 Basic.Settings.Video.DownscaleFilter.Bilinear="Bilinear (Fastest, but blurry if scaling)"

obs/window-basic-main.cpp

@@ -683,6 +683,15 @@ void OBSBasic::OBSInit()
 	if (!previewEnabled)
 		QMetaObject::invokeMethod(this, "TogglePreview",
 				Qt::QueuedConnection);
+
+#ifdef _WIN32
+	uint32_t winVer = GetWindowsVersion();
+	if (winVer > 0 && winVer < 0x602) {
+		bool disableAero = config_get_bool(basicConfig, "Video",
+				"DisableAero");
+		SetAeroEnabled(!disableAero);
+	}
+#endif
 }
 
 void OBSBasic::InitHotkeys()
@@ -888,6 +897,17 @@ OBSBasic::~OBSBasic()
 	config_set_bool(App()->GlobalConfig(), "BasicWindow", "PreviewEnabled",
 			previewEnabled);
 	config_save(App()->GlobalConfig());
+
+#ifdef _WIN32
+	uint32_t winVer = GetWindowsVersion();
+	if (winVer > 0 && winVer < 0x602) {
+		bool disableAero = config_get_bool(basicConfig, "Video",
+				"DisableAero");
+		if (disableAero) {
+			SetAeroEnabled(true);
+		}
+	}
+#endif
 }
 
 void OBSBasic::SaveProject()

obs/window-basic-settings.cpp

@@ -187,6 +187,13 @@ static CodecDesc GetDefaultCodecDesc(const ff_format_desc *formatDesc,
 			id);
 }
 
+#ifdef _WIN32
+void OBSBasicSettings::ToggleDisableAero(bool checked)
+{
+	SetAeroEnabled(!checked);
+}
+#endif
+
 void OBSBasicSettings::HookWidget(QWidget *widget, const char *signal,
 		const char *slot)
 {
@@ -308,6 +315,22 @@ OBSBasicSettings::OBSBasicSettings(QWidget *parent)
 	HookWidget(ui->colorSpace,           COMBO_CHANGED,  ADV_CHANGED);
 	HookWidget(ui->colorRange,           COMBO_CHANGED,  ADV_CHANGED);
 
+#ifdef _WIN32
+	uint32_t winVer = GetWindowsVersion();
+	if (winVer > 0 && winVer < 0x602) {
+		toggleAero = new QCheckBox(
+				QTStr("Basic.Settings.Video.DisableAero"),
+				this);
+		QFormLayout *videoLayout =
+			reinterpret_cast<QFormLayout*>(ui->videoPage->layout());
+		videoLayout->addRow(nullptr, toggleAero);
+
+		HookWidget(toggleAero, CHECK_CHANGED, VIDEO_CHANGED);
+		connect(toggleAero, &QAbstractButton::toggled,
+				this, &OBSBasicSettings::ToggleDisableAero);
+	}
+#endif
+
 	//Apply button disabled until change.
 	EnableApplyButton(false);
 
@@ -871,6 +894,16 @@ void OBSBasicSettings::LoadVideoSettings()
 	LoadFPSData();
 	LoadDownscaleFilters();
 
+#ifdef _WIN32
+	if (toggleAero) {
+		bool disableAero = config_get_bool(main->Config(), "Video",
+				"DisableAero");
+		toggleAero->setChecked(disableAero);
+
+		aeroWasDisabled = disableAero;
+	}
+#endif
+
 	loading = false;
 }
 
@@ -1827,6 +1860,13 @@ void OBSBasicSettings::SaveVideoSettings()
 	SaveSpinBox(ui->fpsNumerator, "Video", "FPSNum");
 	SaveSpinBox(ui->fpsDenominator, "Video", "FPSDen");
 	SaveComboData(ui->downscaleFilter, "Video", "ScaleType");
+
+#ifdef _WIN32
+	if (toggleAero) {
+		SaveCheckBox(toggleAero, "Video", "DisableAero");
+		aeroWasDisabled = toggleAero->isChecked();
+	}
+#endif
 }
 
 void OBSBasicSettings::SaveAdvancedSettings()
@@ -2098,12 +2138,17 @@ bool OBSBasicSettings::QueryChanges()
 			QMessageBox::Yes | QMessageBox::No |
 			QMessageBox::Cancel);
 
-	if (button == QMessageBox::Cancel)
+	if (button == QMessageBox::Cancel) {
 		return false;
-	else if (button == QMessageBox::Yes)
+	} else if (button == QMessageBox::Yes) {
 		SaveSettings();
-	else
+	} else {
 		LoadSettings(true);
+#ifdef _WIN32
+		if (toggleAero)
+			SetAeroEnabled(!aeroWasDisabled);
+#endif
+	}
 
 	ClearChanged();
 	return true;

obs/window-basic-settings.hpp

@@ -30,6 +30,7 @@
 class OBSBasic;
 class QAbstractButton;
 class QComboBox;
+class QCheckBox;
 class OBSPropertiesView;
 class OBSHotkeyWidget;
 
@@ -152,6 +153,12 @@ private:
 		EnableApplyButton(false);
 	}
 
+#ifdef _WIN32
+	bool aeroWasDisabled = false;
+	QCheckBox *toggleAero = nullptr;
+	void ToggleDisableAero(bool checked);
+#endif
+
 	void HookWidget(QWidget *widget, const char *signal, const char *slot);
 
 	bool QueryChanges();