From 01c6a9cd09905a49ff81e9ca68c2dabd67ce86fa Mon Sep 17 00:00:00 2001
From: Thomas Bernard <miniupnp@free.fr>
Date: Mon, 25 Jun 2018 11:02:59 +0200
Subject: [PATCH] Fix Drop file with SDL/Win32. implement it with plain win32

we have to handle both unicode and non unicode builds
---
 src/input.c       | 13 +++++++++++++
 src/win32screen.c | 26 ++++++++++++++++++++++++++
 2 files changed, 39 insertions(+)

diff --git a/src/input.c b/src/input.c
index 05eef473..11cf0f84 100644
--- a/src/input.c
+++ b/src/input.c
@@ -1014,10 +1014,23 @@ int Get_input(int sleep_time)
                     Drop_file_name=calloc(len+1,1);
                     if (Drop_file_name)
                     {
+#ifdef UNICODE
+                      TCHAR LongDropFileName[MAX_PATH];
+                      TCHAR ShortDropFileName[MAX_PATH];
+                      if (DragQueryFile(hdrop, 0 , LongDropFileName ,(UINT) MAX_PATH)
+                        && GetShortPathName(LongDropFileName, ShortDropFileName, MAX_PATH))
+                      {
+                        int i;
+                        for (i = 0; ShortDropFileName[i] != 0; i++)
+                          Drop_file_name[i] = (char)ShortDropFileName[i];
+                        Drop_file_name[i] = 0;
+                      }
+#else
                       if (DragQueryFile(hdrop,0 ,(LPTSTR) Drop_file_name ,(UINT) MAX_PATH))
                       {
                         // Success
                       }
+#endif
                       else
                       {
                         free(Drop_file_name);
diff --git a/src/win32screen.c b/src/win32screen.c
index 81cb9127..fc1eb018 100644
--- a/src/win32screen.c
+++ b/src/win32screen.c
@@ -166,6 +166,32 @@ static LRESULT CALLBACK Win32_WindowProc(HWND hwnd, UINT uMsg, WPARAM wParam, LP
   case WM_CHAR:
     Key_ANSI = Key_UNICODE = wParam;
     return 0;
+  case WM_DROPFILES:
+    {
+      int file_count;
+      HDROP hDrop = (HDROP)wParam;
+
+      file_count = DragQueryFile(hDrop, (UINT)-1, NULL , 0);
+      if (file_count > 0)
+      {
+        TCHAR LongDropFileName[MAX_PATH];
+        TCHAR ShortDropFileName[MAX_PATH];
+        if (DragQueryFile(hDrop, 0 , LongDropFileName ,(UINT) MAX_PATH)
+           && GetShortPathName(LongDropFileName, ShortDropFileName, MAX_PATH))
+        {
+          Drop_file_name = (char *)malloc(lstrlen(ShortDropFileName) + 1);
+          if (Drop_file_name != NULL)
+          {
+            int i;
+
+            for (i = 0; ShortDropFileName[i] != 0; i++)
+              Drop_file_name[i] = (char)ShortDropFileName[i];
+            Drop_file_name[i] = 0;
+          }
+        }
+      }
+    }
+    return 0;
   default:
     {
       char msg[256];