From 6feee2e3c29effa7775c5059de119c12321db3c8 Mon Sep 17 00:00:00 2001
From: Roberto Pastor Muela <37798125+RobPasMue@users.noreply.github.com>
Date: Wed, 6 Nov 2024 13:47:57 +0100
Subject: [PATCH] fix: Windows DLL proper load

---
 src/ansys/tools/installer/main.py | 18 ++++++++++++++++--
 1 file changed, 16 insertions(+), 2 deletions(-)

diff --git a/src/ansys/tools/installer/main.py b/src/ansys/tools/installer/main.py
index 698d965a..b36d4316 100644
--- a/src/ansys/tools/installer/main.py
+++ b/src/ansys/tools/installer/main.py
@@ -739,13 +739,29 @@ def _run_install_python(self, filename):
         self.setEnabled(True)
 
 
+def __restore_windows_dll_load():
+    """PyInstaller on Windows may break DLL loading. This function restores it."""
+    import sys
+    LOG.debug(f"sys.platform: {sys.platform}")
+    if sys.platform == "win32":
+        LOG.debug("Restoring DLL loading on Windows...")
+        import ctypes
+        ctypes.windll.kernel32.SetDllDirectoryA(None)
+
+
 def open_gui():
     """Start the installer as a QT Application."""
     import argparse
     import ctypes
+    
+    # Enable logging early
+    enable_logging()
 
     if os.name == "nt":
         import msvcrt
+        
+        # Restore DLL loading on Windows...
+        __restore_windows_dll_load()
 
         kernel32 = ctypes.windll.kernel32
 
@@ -776,8 +792,6 @@ def open_gui():
         sys.stdout = open("CONOUT$", "w")
         sys.stderr = open("CONOUT$", "w")
 
-    enable_logging()
-
     app = QtWidgets.QApplication(sys.argv)
     window = AnsysPythonInstaller()