Fix color management issue on windows (#20054)

* Fix color management issue on windows

* win32 dt_colorspaces_set_display_profile style and log

Author: Dannny1

src/common/colorspaces.c

@@ -1,6 +1,6 @@
 /*
     This file is part of darktable,
-    Copyright (C) 2010-2025 darktable developers.
+    Copyright (C) 2010-2026 darktable developers.
 
     darktable is free software: you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
@@ -37,6 +37,11 @@
 #include "colord-gtk.h"
 #endif
 
+#ifdef _WIN32
+#include <dwmapi.h>
+#include <gdk/gdkwin32.h>
+#endif
+
 #if 0
 #include <ApplicationServices/ApplicationServices.h>
 #include <Carbon/Carbon.h>
@@ -2009,7 +2014,25 @@ void dt_colorspaces_set_display_profile
   profile_source = g_strdup("osx color profile api");
 #endif
 #elif defined G_OS_WIN32
-  HDC hdc = GetDC(NULL);
+  GtkWidget *widget = (profile_type == DT_COLORSPACE_DISPLAY2)
+      ? darktable.develop->second_wnd
+      : dt_ui_center(darktable.gui->ui);
+  GdkWindow *window = gtk_widget_get_window(widget);
+  HWND hwnd = (HWND)gdk_win32_window_get_handle(window);  // get window handle
+  HMONITOR hMonitor = MonitorFromWindow(hwnd, MONITOR_DEFAULTTONEAREST); // get monitor handle
+  if(!hMonitor)
+  { 
+    dt_print(DT_DEBUG_ALWAYS, "[win32 dt_colorspaces_set_display_profile] error getting monitor handle"); 
+    return;
+  }
+  MONITORINFOEX monitorInfo;
+  monitorInfo.cbSize = sizeof(MONITORINFOEX);
+  if(!GetMonitorInfoW(hMonitor, (LPMONITORINFO) &monitorInfo))  //get monitor info
+  { 
+    dt_print(DT_DEBUG_ALWAYS, "[win32 dt_colorspaces_set_display_profile] error getting monitor info"); 
+    return;
+  }
+  HDC hdc = CreateIC(L"MONITOR", monitorInfo.szDevice, NULL, NULL); // get device-info context of the monitor
   if(hdc != NULL)
   {
     DWORD len = 0;
@@ -2028,7 +2051,7 @@ void dt_colorspaces_set_display_profile
       }
     }
     g_free(wpath);
-    ReleaseDC(NULL, hdc);
+    DeleteDC(hdc);
   }
   profile_source = g_strdup("windows color profile api");
 #endif