diff --git a/app/CMakeLists.txt b/app/CMakeLists.txt
index 23f8b1b..99fce92 100644
--- a/app/CMakeLists.txt
+++ b/app/CMakeLists.txt
@@ -55,6 +55,7 @@ add_library( # Sets the name of the library.
 
         src/main/cpp/win32-layer.c
         src/main/cpp/android-layer.c
+        src/main/cpp/android-display.c # display.c rewrite
         src/main/cpp/android-emu48.c # Emu48.c rewrite
         src/main/cpp/emu48-jni.c
 )
diff --git a/app/src/main/cpp/win32-layer.c b/app/src/main/cpp/win32-layer.c
index 2ca0c81..4138361 100644
--- a/app/src/main/cpp/win32-layer.c
+++ b/app/src/main/cpp/win32-layer.c
@@ -98,8 +98,9 @@ DWORD SetFilePointer(HANDLE hFile, LONG lDistanceToMove, PLONG lpDistanceToMoveH
 }
 
 BOOL SetEndOfFile(HANDLE hFile) {
-    //TODO
-    return FALSE;
+    off_t currentPosition = lseek(hFile->fileDescriptor, 0, SEEK_CUR);
+    int truncateResult = ftruncate(hFile->fileDescriptor, currentPosition);
+    return truncateResult == 0;
 }
 
 DWORD GetFileSize(HANDLE hFile, LPDWORD lpFileSizeHigh) {
@@ -109,6 +110,9 @@ DWORD GetFileSize(HANDLE hFile, LPDWORD lpFileSizeHigh) {
     return fileLength;
 }
 
+//** https://www.ibm.com/developerworks/systems/library/es-MigratingWin32toLinux.html
+//https://www.ibm.com/developerworks/systems/library/es-win32linux.html
+//https://www.ibm.com/developerworks/systems/library/es-win32linux-sem.html
 HANDLE CreateFileMapping(HANDLE hFile, LPSECURITY_ATTRIBUTES lpFileMappingAttributes, DWORD flProtect, DWORD dwMaximumSizeHigh, DWORD dwMaximumSizeLow, LPCSTR lpName) {
     return NULL;
 }
diff --git a/app/src/main/cpp/win32-layer.h b/app/src/main/cpp/win32-layer.h
index ea13a31..bbed556 100644
--- a/app/src/main/cpp/win32-layer.h
+++ b/app/src/main/cpp/win32-layer.h
@@ -52,6 +52,7 @@ typedef ULONG_PTR DWORD_PTR, *PDWORD_PTR;
 
 enum HANDLE_TYPE {
     HANDLE_TYPE_FILE = 1,
+    HANDLE_TYPE_FILE_MAPPING,
     HANDLE_TYPE_EVENT,
     HANDLE_TYPE_THREAD,
 };