Add example program + fix some mistakes

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@17933 a1c6a512-1295-4272-9138-f99709370657

utils/MTP/MTP_DLL/MTP_DLL.h

@@ -9,3 +9,7 @@
 #else
 #define MTP_DLL_API __declspec(dllimport)
 #endif
+
+extern "C" {
+__declspec(dllexport) bool send_fw(LPWSTR file, int filesize);
+}

utils/MTP/MTP_DLL/MTP_DLL.vcproj

@@ -140,7 +140,7 @@
 				AdditionalDependencies="mssachlp.lib"
 				LinkIncremental="1"
 				AdditionalLibraryDirectories="d:\wmsdk\wmfsdk95\lib,d:\wmsdk\wmfsdk95\wmdm\lib"
-				GenerateDebugInformation="true"
+				GenerateDebugInformation="false"
 				SubSystem="2"
 				OptimizeReferences="2"
 				EnableCOMDATFolding="2"

utils/MTP/MTP_DLL/sendfirm_win.cpp

@@ -20,7 +20,7 @@
  * Link to "mssachlp.lib"
  *
  */
-
+extern "C" {
 __declspec(dllexport) bool send_fw(LPWSTR file, int filesize)
 {
     bool return_value = false;
@@ -158,6 +158,7 @@ __declspec(dllexport) bool send_fw(LPWSTR file, int filesize)
 
 	return return_value;
 }
+}
 
 /*
  * Example code:

utils/MTP/Makefile

@@ -7,5 +7,8 @@ all: $(OUTPUT)
 $(OUTPUT): sendfirm.c
 	gcc $(CFLAGS) $(LIBS) -o $(OUTPUT) sendfirm.c
 
+$(OUTPUT).exe: sendfirm_win.c
+	gcc $(CFLAGS) -o $(OUTPUT).exe sendfirm_win.c MTP_DLL.dll
+
 clean:
 	rm -f $(OUTPUT)