diff --git a/project/jni/sdl-1.2/include/SDL_screenkeyboard.h b/project/jni/sdl-1.2/include/SDL_screenkeyboard.h
index cde9c6f9c..1bf13bc3d 100644
--- a/project/jni/sdl-1.2/include/SDL_screenkeyboard.h
+++ b/project/jni/sdl-1.2/include/SDL_screenkeyboard.h
@@ -64,7 +64,7 @@ enum {
 
 /* Set on-screen button position, specify zero width to hide the button.
    All coordinates are in the actual screen dimensions, NOT what you are supplying to SDL_SetVideoMode(),
-   use SDL_ListModes()[0] to determine the actual screen boundaries. */
+   use SDL_ListModes(NULL, 0)[0] to determine the actual screen boundaries. */
 extern DECLSPEC int SDLCALL SDL_ANDROID_SetScreenKeyboardButtonPos(int buttonId, SDL_Rect * pos);
 extern DECLSPEC int SDLCALL SDL_ANDROID_GetScreenKeyboardButtonPos(int buttonId, SDL_Rect * pos);
 
@@ -99,6 +99,12 @@ extern DECLSPEC int SDLCALL SDL_ANDROID_GetScreenKeyboardSize(void);
 /* Set a particular button to pass a mouse/multitouch events down to the application, by default all buttons block touch events */
 extern DECLSPEC int SDLCALL SDL_ANDROID_SetScreenKeyboardButtonGenerateTouchEvents(int buttonId, int generateEvents);
 
+/* Configure a button to stay pressed after touch, and un-press after second touch, to emulate Ctrl/Alt/Shift keys  */
+extern DECLSPEC int SDLCALL SDL_ANDROID_SetScreenKeyboardButtonStayPressedAfterTouch(int buttonId, int stayPressed);
+
+/* Set screen keyboard transparency, 255 or SDL_ALPHA_OPAQUE is non-transparent, 0 or SDL_ALPHA_TRANSPARENT is transparent */
+extern DECLSPEC int SDLCALL SDL_ANDROID_SetScreenKeyboardTransparency(int alpha);
+
 /* Show Android QWERTY keyboard, and pass entered text back to application as SDL keypress events,
    previousText is UTF-8 encoded, it may be NULL, only 256 first bytes will be used, and this call will not block */
 extern DECLSPEC int SDLCALL SDL_ANDROID_ToggleScreenKeyboardTextInput(const char * previousText);
diff --git a/project/jni/sdl-1.2/src/video/android/SDL_androidinput.c b/project/jni/sdl-1.2/src/video/android/SDL_androidinput.c
index 6bcb8066f..17e56ea36 100644
--- a/project/jni/sdl-1.2/src/video/android/SDL_androidinput.c
+++ b/project/jni/sdl-1.2/src/video/android/SDL_androidinput.c
@@ -130,7 +130,7 @@ int SDL_ANDROID_currentMouseButtons = 0;
 static int hardwareMouseDetected = 0;
 enum { MOUSE_HW_BUTTON_LEFT = 1, MOUSE_HW_BUTTON_RIGHT = 2, MOUSE_HW_BUTTON_MIDDLE = 4, MOUSE_HW_BUTTON_BACK = 8, MOUSE_HW_BUTTON_FORWARD = 16, MOUSE_HW_BUTTON_MAX = MOUSE_HW_BUTTON_FORWARD };
 enum { MOUSE_HW_INPUT_FINGER = 0, MOUSE_HW_INPUT_STYLUS = 1, MOUSE_HW_INPUT_MOUSE = 2 };
-enum { DEADZONE_HOVER_FINGER = 32, DEADZONE_HOVER_STYLUS = 64, HOVER_FREEZE_TIME = 500, HOVER_DISTANCE_MAX = 1024 };
+enum { DEADZONE_HOVER_FINGER = 50, DEADZONE_HOVER_STYLUS = 80, HOVER_FREEZE_TIME = 500, HOVER_DISTANCE_MAX = 1024 };
 static int hoverJitterFilter = 1;
 static int hoverX, hoverY, hoverTime = 0, hoverMouseFreeze = 0, hoverDeadzone = 0;
 static int rightMouseButtonLongPress = 1;
diff --git a/project/jni/sdl-1.2/src/video/android/SDL_androidvideo.h b/project/jni/sdl-1.2/src/video/android/SDL_androidvideo.h
index 0aaf9b4f1..e5092c0a2 100644
--- a/project/jni/sdl-1.2/src/video/android/SDL_androidvideo.h
+++ b/project/jni/sdl-1.2/src/video/android/SDL_androidvideo.h
@@ -28,7 +28,7 @@
 #include "SDL_joystick.h"
 #include "SDL_events.h"
 
-#define VIDEO_DEBUG 1
+//#define VIDEO_DEBUG 1
 
 enum ScreenZoom { ZOOM_NONE = 0, ZOOM_MAGNIFIER = 1 };
 
diff --git a/project/jni/sdl-1.2/src/video/android/SDL_touchscreenkeyboard.c b/project/jni/sdl-1.2/src/video/android/SDL_touchscreenkeyboard.c
index 3159bb2d0..f137b12d4 100644
--- a/project/jni/sdl-1.2/src/video/android/SDL_touchscreenkeyboard.c
+++ b/project/jni/sdl-1.2/src/video/android/SDL_touchscreenkeyboard.c
@@ -69,8 +69,9 @@ SDL_KEY(SDL_KEY_VAL(SDL_ANDROID_SCREENKB_KEYCODE_5)),
 enum { ARROW_LEFT = 1, ARROW_RIGHT = 2, ARROW_UP = 4, ARROW_DOWN = 8 };
 static short oldArrows = 0;
 
-static short pointerInButtonRect[MAX_BUTTONS + MAX_JOYSTICKS];
-static short buttonsGenerateSdlEvents[MAX_BUTTONS + MAX_JOYSTICKS];
+static Sint8 pointerInButtonRect[MAX_BUTTONS + MAX_JOYSTICKS];
+static Sint8 buttonsGenerateSdlEvents[MAX_BUTTONS + MAX_JOYSTICKS];
+static Sint8 buttonsStayPressedAfterTouch[MAX_BUTTONS + MAX_JOYSTICKS];
 
 typedef struct
 {
@@ -410,6 +411,8 @@ unsigned SDL_ANDROID_processTouchscreenKeyboard(int x, int y, int action, int po
 					pointerInButtonRect[i] = pointerId;
 					if( i == BUTTON_TEXT_INPUT )
 						SDL_ANDROID_ToggleScreenKeyboardTextInput(NULL);
+					else if( buttonsStayPressedAfterTouch[i] )
+						SDL_ANDROID_MainThreadPushKeyboardKey( SDL_GetKeyboardState(NULL)[buttonKeysyms[i]] == 0 ? SDL_PRESSED : SDL_RELEASED, buttonKeysyms[i], 0 );
 					else
 						SDL_ANDROID_MainThreadPushKeyboardKey( SDL_PRESSED, buttonKeysyms[i], 0 );
 				}
@@ -449,7 +452,7 @@ unsigned SDL_ANDROID_processTouchscreenKeyboard(int x, int y, int action, int po
 			{
 				processed |= 1<<i;
 				pointerInButtonRect[i] = -1;
-				if( i != BUTTON_TEXT_INPUT )
+				if( i != BUTTON_TEXT_INPUT && !buttonsStayPressedAfterTouch[i] )
 					SDL_ANDROID_MainThreadPushKeyboardKey( SDL_RELEASED, buttonKeysyms[i], 0 );
 			}
 		}
@@ -984,6 +987,19 @@ int SDLCALL SDL_ANDROID_SetScreenKeyboardButtonGenerateTouchEvents(int buttonId,
 	return 1;
 }
 
+int SDLCALL SDL_ANDROID_SetScreenKeyboardButtonStayPressedAfterTouch(int buttonId, int stayPressed)
+{
+	if( buttonId < 0 || buttonId >= SDL_ANDROID_SCREENKEYBOARD_BUTTON_NUM )
+		return 0;
+	buttonsStayPressedAfterTouch[buttonId] = stayPressed;
+	return 1;
+}
+
+int SDLCALL SDL_ANDROID_SetScreenKeyboardTransparency(int alpha)
+{
+	transparency = (float)alpha / 255.0f;
+}
+
 static int ScreenKbRedefinedByUser = 0;
 
 JNIEXPORT void JNICALL