finally fix that Windows 32-bit crash

src/gui/scaling.cpp

@@ -24,7 +24,8 @@
 
 #ifdef _WIN32
 #include <windows.h>
-typedef HRESULT (*GDFM)(HMONITOR,int,UINT*,UINT*);
+#include "shellScalingStub.h"
+typedef HRESULT (WINAPI *GDFM)(HMONITOR,MONITOR_DPI_TYPE,UINT*,UINT*);
 #endif
 
 #ifdef __APPLE__
@@ -71,9 +72,9 @@ double getScaleFactor(const char* driverHint) {
     return 1.0;
   }
 
-  unsigned int dpiX=96;
-  unsigned int dpiY=96;
-  HRESULT result=ta_GetDpiForMonitor(disp,0,&dpiX,&dpiY);
+  UINT dpiX=96;
+  UINT dpiY=96;
+  HRESULT result=ta_GetDpiForMonitor(disp,MDT_EFFECTIVE_DPI,&dpiX,&dpiY);
   if (result!=S_OK) {
     logW("GetDpiForMonitor failure (%.8x) - no scaling detection available!",result);
 

src/gui/shellScalingStub.h

@@ -0,0 +1,36 @@
+/*
+ * Copyright 2016 Sebastian Lackner
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
+ */
+
+#ifndef __WINE_SHELLSCALINGAPI_H
+
+typedef enum MONITOR_DPI_TYPE
+{
+    MDT_EFFECTIVE_DPI   = 0,
+    MDT_ANGULAR_DPI     = 1,
+    MDT_RAW_DPI         = 2,
+    MDT_DEFAULT         = MDT_EFFECTIVE_DPI,
+} MONITOR_DPI_TYPE;
+
+typedef enum PROCESS_DPI_AWARENESS
+{
+    PROCESS_DPI_UNAWARE,
+    PROCESS_SYSTEM_DPI_AWARE,
+    PROCESS_PER_MONITOR_DPI_AWARE
+} PROCESS_DPI_AWARENESS;
+
+#endif /* __WINE_SHELLSCALINGAPI_H */

src/main.cpp

@@ -32,6 +32,10 @@
 #include <windows.h>
 #include <combaseapi.h>
 #include <shellapi.h>
+
+#include "gui/shellScalingStub.h"
+
+typedef HRESULT (WINAPI *SPDA)(PROCESS_DPI_AWARENESS);
 #else
 #include <unistd.h>
 #endif
@@ -339,6 +343,22 @@ void reportError(String what) {
 int main(int argc, char** argv) {
   initLog();
 #ifdef _WIN32
+  // set DPI awareness
+  HMODULE shcore=LoadLibraryW(L"shcore.dll");
+  if (shcore!=NULL) {
+    SPDA ta_SetProcessDpiAwareness=(SPDA)GetProcAddress(shcore,"SetProcessDpiAwareness");
+    if (ta_SetProcessDpiAwareness!=NULL) {
+      HRESULT result=ta_SetProcessDpiAwareness(PROCESS_PER_MONITOR_DPI_AWARE);
+      if (result!=S_OK) {
+        // ???
+      }
+    }
+    if (!FreeLibrary(shcore)) {
+      // ???
+    }
+  }
+
+  // co initialize ex
   HRESULT coResult=CoInitializeEx(NULL,COINIT_MULTITHREADED);
   if (coResult!=S_OK) {
     logE("CoInitializeEx failed!");