Fix Win98 problem.

Call GlobalMemoryStatusEx via LoadLibrary and GetProcAddress.

panda/src/windisplay/winDetectDx.h

@@ -38,6 +38,8 @@ static DISPLAY_FORMAT display_format_array [ ] = {
   D3DFMT_UNKNOWN,      0, FALSE,
 };
 
+typedef BOOL (WINAPI *GlobalMemoryStatusExType) (LPMEMORYSTATUSEX lpBuffer);
+
 static int d3d_format_to_bits_per_pixel (D3DFORMAT d3d_format) {
   int format_index;
   int bits_per_pixel;
@@ -442,14 +444,28 @@ static int get_display_information (DisplaySearchParameters &display_search_para
   }
 
   // memory
-  MEMORYSTATUSEX memory_status;
-
-  memory_status.dwLength = sizeof (MEMORYSTATUSEX);
-  if (GlobalMemoryStatusEx (&memory_status)) {
-    physical_memory = memory_status.ullTotalPhys;
-    available_physical_memory = memory_status.ullAvailPhys;
+  bool memory_state;
+  HMODULE kernel32_dll;
+    
+  memory_state = false;
+  kernel32_dll = LoadLibrary ("kernel32.dll");
+  if (kernel32_dll) {
+    GlobalMemoryStatusExType GlobalMemoryStatusExFunction;
+
+    GlobalMemoryStatusExFunction = (GlobalMemoryStatusExType) GetProcAddress (kernel32_dll, "GlobalMemoryStatusEx");
+    if (GlobalMemoryStatusExFunction) {
+      MEMORYSTATUSEX memory_status;
+
+      memory_status.dwLength = sizeof (MEMORYSTATUSEX);
+      if (GlobalMemoryStatusExFunction (&memory_status)) {
+        physical_memory = memory_status.ullTotalPhys;
+        available_physical_memory = memory_status.ullAvailPhys;
+        memory_state = true;
+      }    
+    }
+    FreeLibrary (kernel32_dll);
   }
-  else {
+  if (memory_state == false) {
     MEMORYSTATUS memory_status;
 
     memory_status.dwLength = sizeof (MEMORYSTATUS);