fix PhIsThemeTransparencyEnabled

Author: DartVanya

phlib/delayhook.c

@@ -768,6 +768,7 @@ typedef struct _PHP_THEME_WINDOW_HEADER_CONTEXT
     HTHEME ThemeHandle;
     BOOLEAN MouseActive;
     POINT CursorPos;
+    HWND ParentWindow;
 } PHP_THEME_WINDOW_HEADER_CONTEXT, *PPHP_THEME_WINDOW_HEADER_CONTEXT;
 
 VOID ThemeWindowRenderHeaderControl(
@@ -955,7 +956,7 @@ LRESULT CALLBACK PhHeaderWindowHookProcedure(
             if (!GetClassName(createStruct->hwndParent, windowClassName, RTL_NUMBER_OF(windowClassName)))
                 windowClassName[0] = UNICODE_NULL;
 
-            if (PhEqualStringZ(windowClassName, L"PhTreeNew", FALSE))
+            if (PhEqualStringZ(windowClassName, PH_TREENEW_CLASSNAME, FALSE))
             {
                 LONG_PTR windowStyle = PhGetWindowStyle(createStruct->hwndParent);
 
@@ -972,6 +973,7 @@ LRESULT CALLBACK PhHeaderWindowHookProcedure(
 		context->ThemeHandle = PhOpenThemeData(WindowHandle, VSCLASS_HEADER, PhGetWindowDpi(WindowHandle));
 		context->CursorPos.x = LONG_MIN;
 		context->CursorPos.y = LONG_MIN;
+		context->ParentWindow = createStruct->hwndParent;
 		PhSetWindowContext(WindowHandle, LONG_MAX, context);
 
 		PhSetControlTheme(WindowHandle, L"DarkMode_ItemsView");
@@ -1062,7 +1064,7 @@ LRESULT CALLBACK PhHeaderWindowHookProcedure(
         case WM_PAINT:
             {
                 // Don't apply header theme for unsupported dialogs: Advanced Security, Digital Signature Details, etc. (Dart Vanya)
-                if (!PhIsDarkModeAllowedForWindow(GetParent(WindowHandle)))
+                if (!PhIsDarkModeAllowedForWindow(context->ParentWindow))
                 {
                     PhRemoveWindowContext(WindowHandle, LONG_MAX);
                     if (context->ThemeHandle)
@@ -2055,12 +2057,6 @@ VOID PhRegisterDetoursHooks(
     NTSTATUS status;
     PVOID baseAddress;
 
-    // For early TaskDialog with PhStartupParameters.ShowOptions
-    if (!PhThemeWindowBackgroundBrush)
-    {
-        PhThemeWindowBackgroundBrush = CreateSolidBrush(PhThemeWindowBackgroundColor);
-    }
-
     if (baseAddress = PhGetLoaderEntryDllBaseZ(L"user32.dll"))
     {
         DefaultCreateWindowEx = PhGetDllBaseProcedureAddress(baseAddress, "CreateWindowExW", 0);
@@ -2140,7 +2136,8 @@ BOOLEAN PhIsThemeTransparencyEnabled(
         0
         )))
     {
-        themesEnableTransparency = !!PhQueryRegistryUlongZ(keyHandle, L"EnableTransparency");
+        ULONG enableTransparency = PhQueryRegistryUlongZ(keyHandle, L"EnableTransparency");
+        themesEnableTransparency = enableTransparency != ULONG_MAX ? !!enableTransparency : FALSE;
         NtClose(keyHandle);
     }
 
@@ -2158,6 +2155,10 @@ VOID PhInitializeSuperclassControls(
     if (PhEnableThemeAcrylicSupport)
         PhEnableThemeAcrylicSupport = PhIsThemeTransparencyEnabled();
 
+    // For early TaskDialog with PhStartupParameters.ShowOptions
+    if (!PhThemeWindowBackgroundBrush)
+        PhThemeWindowBackgroundBrush = CreateSolidBrush(PhThemeWindowBackgroundColor);
+
     // If PreferredAppMode is not set, PhShouldAppsUseDarkMode returns current Windows app color mode.
     // When app mode set to always dark/light all subsequent calls to PhShouldAppsUseDarkMode always ignore
     // the current Windows app color mode and return:

phlib/phlib.vcxproj.filters

@@ -205,6 +205,9 @@
     </ClCompile>
     <ClCompile Include="searchbox.c">
       <Filter>Source Files</Filter>
+    </ClCompile>
+	<ClCompile Include="delayhook.c">
+      <Filter>Source Files</Filter>
     </ClCompile>
   </ItemGroup>
   <ItemGroup>

phlib/theme.c

@@ -185,7 +185,7 @@ VOID PhInitializeWindowTheme(
                 WCHAR windowClassName[MAX_PATH];
                 if (!GetClassName(WindowHandle, windowClassName, RTL_NUMBER_OF(windowClassName)))
                     windowClassName[0] = UNICODE_NULL;
-                if (PhEqualStringZ(windowClassName, L"PhTreeNew", FALSE) || PhEqualStringZ(windowClassName, WC_LISTVIEW, FALSE))
+                if (PhEqualStringZ(windowClassName, PH_TREENEW_CLASSNAME, FALSE) || PhEqualStringZ(windowClassName, WC_LISTVIEW, FALSE))
                     PhAllowDarkModeForWindow(WindowHandle, TRUE);   // HACK for dynamically generated plugin tabs
             }
         }
@@ -384,7 +384,7 @@ VOID PhWindowThemeSetDarkMode(
     _In_ BOOLEAN EnableDarkMode
     )
 {
-    if (EnableDarkMode && PhEnableThemeSupport) // ShouldAppsUseDarkMode_I()
+    if (EnableDarkMode && PhEnableThemeSupport) // PhShouldAppsUseDarkMode()
     {
         PhSetControlTheme(WindowHandle, L"DarkMode_Explorer");
         //PhSetControlTheme(WindowHandle, L"DarkMode_ItemsView");
@@ -738,7 +738,7 @@ BOOLEAN CALLBACK PhpThemeWindowEnumChildWindows(
         PhWindowThemeSetDarkMode(WindowHandle, TRUE);
         //InvalidateRect(WindowHandle, NULL, FALSE);
     }
-    else if (PhEqualStringZ(windowClassName, L"PhTreeNew", FALSE))
+    else if (PhEqualStringZ(windowClassName, PH_TREENEW_CLASSNAME, FALSE))
     {
         if (WindowsVersion >= WINDOWS_10_RS5)
         {
@@ -900,7 +900,7 @@ BOOLEAN CALLBACK PhpReInitializeThemeWindowEnumChildWindows(
             PhWindowThemeSetDarkMode(WindowHandle, TRUE);
         }
     }
-    else if (PhEqualStringZ(windowClassName, L"PhTreeNew", FALSE))
+    else if (PhEqualStringZ(windowClassName, PH_TREENEW_CLASSNAME, FALSE))
     {
         //switch (PhpThemeColorMode)
         //{