Bug 1470 - NEWT/JNI: Perform exception check and rethrow for all Java Callbacks as recommended

6 files changed, 67 insertions, 7 deletions

diff --git a/src/newt/native/IOSNewtUIWindow.m b/src/newt/native/IOSNewtUIWindow.m
index 2efd7a25c..5d89d448e 100644
--- a/src/newt/native/IOSNewtUIWindow.m
+++ b/src/newt/native/IOSNewtUIWindow.m
@@ -222,6 +222,7 @@ static jmethodID windowRepaintID = NULL;
     (*env)->CallBooleanMethod(env, javaWindowObject, windowRepaintID, JNI_TRUE /* defer */,
         (int)dirtyRect.origin.x, (int)viewFrame.size.height - (int)dirtyRect.origin.y, 
         (int)dirtyRect.size.width, (int)dirtyRect.size.height);
+    NewtCommon_ExceptionCheck1_throwNewRuntimeException(env, "IOSWindow.drawRect: Exception occured at windowRepaint(..)");
 
     // detaching thread not required - daemon
     // NewtCommon_ReleaseJNIEnv(shallBeDetached);
@@ -414,6 +415,7 @@ static jmethodID windowRepaintID = NULL;
     (*env)->CallVoidMethod(env, javaWindowObject, sendTouchScreenEventID,
             (jshort)newtEventType, (jint)newtEventModifiers, 
             jActionIdx, jNames, jTouchTypes, jX, jY, jPressure, (jfloat)2.0f); 
+    NewtCommon_ExceptionCheck1_throwNewRuntimeException(env, "IOSWindow.sendTouchEvent: Exception occured at sendTouchScreenEvent(..)");
 
     // detaching thread not required - daemon
     // NewtCommon_ReleaseJNIEnv(shallBeDetached);
@@ -606,6 +608,7 @@ static jmethodID windowRepaintID = NULL;
     }
     (*env)->CallVoidMethod(env, javaWindowObject, updatePixelScaleID, defer?JNI_TRUE:JNI_FALSE, 
                           (jfloat)oldPixelScaleV, (jfloat)pixelScale, (jfloat)maxPixelScale, (jboolean)changeScale);
+    NewtCommon_ExceptionCheck1_throwNewRuntimeException(env, "IOSWindow.updatePixelScale: Exception occured at updatePixelScale(..)");
 
     // detaching thread not required - daemon
     // NewtCommon_ReleaseJNIEnv(shallBeDetached);
@@ -664,6 +667,7 @@ static jmethodID windowRepaintID = NULL;
     }
     (*env)->CallVoidMethod(env, javaWindowObject, updatePixelScaleID, defer?JNI_TRUE:JNI_FALSE, 
                           (jfloat)oldPixelScaleV, (jfloat)pixelScale, (jfloat)maxPixelScale, (jboolean)changeScale);
+    NewtCommon_ExceptionCheck1_throwNewRuntimeException(env, "IOSWindow.setPixelScale: Exception occured at updatePixelScale(..)");
 
     // detaching thread not required - daemon
     // NewtCommon_ReleaseJNIEnv(shallBeDetached);
@@ -692,6 +696,7 @@ static jmethodID windowRepaintID = NULL;
 
     if( NULL != env && NULL != javaWin ) {
         (*env)->CallBooleanMethod(env, javaWin, insetsChangedID, JNI_FALSE, cachedInsets[0], cachedInsets[1], cachedInsets[2], cachedInsets[3]);
+        NewtCommon_ExceptionCheck1_throwNewRuntimeException(env, "IOSWindow.updateInsets: Exception occured at insetsChanged(..)");
     }
 }
 
@@ -716,6 +721,7 @@ static jmethodID windowRepaintID = NULL;
                                   JNI_FALSE, // force
                                   withinLiveResize
                                  );
+        NewtCommon_ExceptionCheck1_throwNewRuntimeException(env, "IOSWindow.updateSizePosInsets: Exception occured at sizeScreenPosInsetsChangedID(..)");
     }
 }
 
@@ -800,6 +806,7 @@ static jmethodID windowRepaintID = NULL;
     }
 
     (*env)->CallBooleanMethod(env, javaWindowObject, focusChangedID, JNI_FALSE, (gained == YES) ? JNI_TRUE : JNI_FALSE);
+    NewtCommon_ExceptionCheck1_throwNewRuntimeException(env, "IOSWindow.focusChanged: Exception occured at focusChanged(..)");
 
     // detaching thread not required - daemon
     // NewtCommon_ReleaseJNIEnv(shallBeDetached);
@@ -824,6 +831,7 @@ static jmethodID windowRepaintID = NULL;
         return;
     }
     (*env)->CallBooleanMethod(env, javaWindowObject, visibleChangedID, (visible == YES) ? JNI_TRUE : JNI_FALSE);
+    NewtCommon_ExceptionCheck1_throwNewRuntimeException(env, "IOSWindow.visibilityChanged: Exception occured at visibilityChanged(..)");
 
     // detaching thread not required - daemon
     // NewtCommon_ReleaseJNIEnv(shallBeDetached);
@@ -923,6 +931,7 @@ static jmethodID windowRepaintID = NULL;
     p0 = [self getLocationOnScreen: p0];
     DBG_PRINT( "windowDidMove: [ x %d, y %d ]\n", (jint) p0.x, (jint) p0.y);
     (*env)->CallBooleanMethod(env, javaWindowObject, screenPositionChangedID, JNI_TRUE, (jint) p0.x, (jint) p0.y);
+    NewtCommon_ExceptionCheck1_throwNewRuntimeException(env, "IOSWindow.windowDidMove: Exception occured at screenPositionChanged(..)");
 
     // detaching thread not required - daemon
     // NewtCommon_ReleaseJNIEnv(shallBeDetached);
@@ -956,6 +965,7 @@ static jmethodID windowRepaintID = NULL;
         }
         [newtView setDestroyNotifySent: true]; // earmark assumption of being closed
         closed = (*env)->CallBooleanMethod(env, javaWindowObject, windowDestroyNotifyID, force ? JNI_TRUE : JNI_FALSE);
+        NewtCommon_ExceptionCheck1_throwNewRuntimeException(env, "IOSWindow.windowClosingImpl: Exception occured at windowDestroyNotify(..)");
         if(!force && !closed) {
             // not closed on java side, not force -> clear flag
             [newtView setDestroyNotifySent: false];
diff --git a/src/newt/native/MacNewtNSWindow.m b/src/newt/native/MacNewtNSWindow.m
index 73bcaddcc..5a65788d2 100644
--- a/src/newt/native/MacNewtNSWindow.m
+++ b/src/newt/native/MacNewtNSWindow.m
@@ -380,6 +380,7 @@ static jmethodID windowRepaintID = NULL;
     (*env)->CallBooleanMethod(env, javaWindowObject, windowRepaintID, JNI_TRUE /* defer */,
         (int)dirtyRect.origin.x, (int)viewFrame.size.height - (int)dirtyRect.origin.y, 
         (int)dirtyRect.size.width, (int)dirtyRect.size.height);
+    NewtCommon_ExceptionCheck1_throwNewRuntimeException(env, "MacWindow.drawRect: Exception occured at windowRepaint(..)");
 
     // detaching thread not required - daemon
     // NewtCommon_ReleaseJNIEnv(shallBeDetached);
@@ -399,6 +400,7 @@ static jmethodID windowRepaintID = NULL;
     }
 
     (*env)->CallBooleanMethod(env, javaWindowObject, visibleChangedID, JNI_FALSE);
+    NewtCommon_ExceptionCheck1_throwNewRuntimeException(env, "MacWindow.viewDidHide: Exception occured at visibleChanged(..)");
 
     // detaching thread not required - daemon
     // NewtCommon_ReleaseJNIEnv(shallBeDetached);
@@ -420,6 +422,7 @@ static jmethodID windowRepaintID = NULL;
     }
 
     (*env)->CallBooleanMethod(env, javaWindowObject, visibleChangedID, JNI_TRUE);
+    NewtCommon_ExceptionCheck1_throwNewRuntimeException(env, "MacWindow.viewDidUnhide: Exception occured at visibleChanged(..)");
 
     // detaching thread not required - daemon
     // NewtCommon_ReleaseJNIEnv(shallBeDetached);
@@ -723,6 +726,7 @@ static jmethodID windowRepaintID = NULL;
     }
     if (evType == EVENT_MOUSE_PRESSED) {
         (*env)->CallVoidMethod(env, javaWindowObject, requestFocusID, JNI_FALSE);
+        NewtCommon_ExceptionCheck1_throwNewRuntimeException(env, "MacWindow.sendMouseEvent: Exception occured at requestFocus(..)");
     }
 
     NSPoint location = [self screenPos2NewtClientWinPos: [NSEvent mouseLocation]];
@@ -731,6 +735,7 @@ static jmethodID windowRepaintID = NULL;
                               evType, javaMods[0],
                               (jint) location.x, (jint) location.y,
                               javaButtonNum, scrollDeltaY);
+    NewtCommon_ExceptionCheck1_throwNewRuntimeException(env, "MacWindow.sendMouseEvent: Exception occured at enqueueMouseEvent(..)");
 
     // detaching thread not required - daemon
     // NewtCommon_ReleaseJNIEnv(shallBeDetached);
@@ -811,6 +816,7 @@ static jmethodID windowRepaintID = NULL;
 
             (*env)->CallBooleanMethod(env, javaWindowObject, enqueueKeyEventID, JNI_FALSE,
                                       evType, javaMods, keyCode, (jchar)keyChar, (jchar)keySymChar);
+            NewtCommon_ExceptionCheck1_throwNewRuntimeException(env, "MacWindow.sendKeyEvent: Exception occured at enqueueKeyEvent(..)");
         }
     } else {
         // non-printable chars
@@ -820,6 +826,7 @@ static jmethodID windowRepaintID = NULL;
 
         (*env)->CallBooleanMethod(env, javaWindowObject, enqueueKeyEventID, JNI_FALSE,
                                   evType, javaMods, keyCode, keyChar, keyChar);
+        NewtCommon_ExceptionCheck1_throwNewRuntimeException(env, "MacWindow.sendKeyEvent: Exception occured at enqueueKeyEvent(..)");
     }
 
     // detaching thread not required - daemon
@@ -863,6 +870,7 @@ NS_ENDHANDLER
     }
     (*env)->CallVoidMethod(env, javaWindowObject, updatePixelScaleID, JNI_TRUE /* defer */, 
                           (jfloat)oldPixelScale, (jfloat)pixelScale, (jfloat)maxPixelScale, (jboolean)changeScale);
+    NewtCommon_ExceptionCheck1_throwNewRuntimeException(env, "MacWindow.viewDidChangeBackingProperties: Exception occured at updatePixelScale(..)");
 
     // detaching thread not required - daemon
     // NewtCommon_ReleaseJNIEnv(shallBeDetached);
@@ -1016,6 +1024,7 @@ NS_ENDHANDLER
 
     if( NULL != env && NULL != javaWin ) {
         (*env)->CallBooleanMethod(env, javaWin, insetsChangedID, JNI_FALSE, cachedInsets[0], cachedInsets[1], cachedInsets[2], cachedInsets[3]);
+        NewtCommon_ExceptionCheck1_throwNewRuntimeException(env, "MacWindow.updateInsets: Exception occured at insetsChanged(..)");
     }
 }
 
@@ -1042,6 +1051,7 @@ NS_ENDHANDLER
                                   JNI_FALSE, // force
                                   withinLiveResize
                                  );
+        NewtCommon_ExceptionCheck1_throwNewRuntimeException(env, "MacWindow.updateSizePosInsets: Exception occured at sizeScreenPosInsetsChanged(..)");
     }
 }
 
@@ -1215,6 +1225,7 @@ NS_ENDHANDLER
     }
 
     (*env)->CallBooleanMethod(env, javaWindowObject, focusChangedID, JNI_FALSE, (gained == YES) ? JNI_TRUE : JNI_FALSE);
+    NewtCommon_ExceptionCheck1_throwNewRuntimeException(env, "MacWindow.focusChanged: Exception occured at focusChanged(..)");
 
     // detaching thread not required - daemon
     // NewtCommon_ReleaseJNIEnv(shallBeDetached);
@@ -1374,6 +1385,7 @@ NS_ENDHANDLER
     p0 = [self getLocationOnScreen: p0];
     DBG_PRINT( "windowDidMove: [ x %d, y %d ]\n", (jint) p0.x, (jint) p0.y);
     (*env)->CallBooleanMethod(env, javaWindowObject, screenPositionChangedID, JNI_TRUE, (jint) p0.x, (jint) p0.y);
+    NewtCommon_ExceptionCheck1_throwNewRuntimeException(env, "MacWindow.windowDidMove: Exception occured at screenPositionChanged(..)");
 
     // detaching thread not required - daemon
     // NewtCommon_ReleaseJNIEnv(shallBeDetached);
@@ -1417,6 +1429,7 @@ NS_ENDHANDLER
         }
         [newtView setDestroyNotifySent: true]; // earmark assumption of being closed
         closed = (*env)->CallBooleanMethod(env, javaWindowObject, windowDestroyNotifyID, force ? JNI_TRUE : JNI_FALSE);
+        NewtCommon_ExceptionCheck1_throwNewRuntimeException(env, "MacWindow.windowClosingImpl: Exception occured at windowDestroyNotify(..)");
         if(!force && !closed) {
             // not closed on java side, not force -> clear flag
             [newtView setDestroyNotifySent: false];
diff --git a/src/newt/native/WindowsWindow.c b/src/newt/native/WindowsWindow.c
index 201304dd9..dd856919f 100644
--- a/src/newt/native/WindowsWindow.c
+++ b/src/newt/native/WindowsWindow.c
@@ -597,6 +597,7 @@ static int WmKeyDown(JNIEnv *env, jobject window, USHORT wkey, WORD repCnt, BYTE
     (*env)->CallBooleanMethod(env, window, sendKeyEventID,
                               (jshort) EVENT_KEY_PRESSED,
                               (jint) modifiers, (jshort) javaVKeyUS, (jshort) javaVKeyXX, (jchar) utf16Char);
+    NewtCommon_ExceptionCheck1_throwNewRuntimeException(env, "WindowsWindow.WmKeyDown: Exception occured at sendKeyEvent(..)");
 
     return 0;
 }
@@ -615,6 +616,7 @@ static int WmKeyUp(JNIEnv *env, jobject window, USHORT wkey, WORD repCnt, BYTE s
     (*env)->CallBooleanMethod(env, window, sendKeyEventID,
                               (jshort) EVENT_KEY_RELEASED,
                               (jint) modifiers, (jshort) javaVKeyUS, (jshort) javaVKeyXX, (jchar) utf16Char);
+    NewtCommon_ExceptionCheck1_throwNewRuntimeException(env, "WindowsWindow.WmKeyUp: Exception occured at sendKeyEvent(..)");
 
     return 0;
 }
@@ -760,8 +762,10 @@ static jboolean UpdateInsets(JNIEnv *env, WindowUserData *wud, HWND hwnd) {
         (void*)hwnd, strategy, (int)wud->insets.left, (int)wud->insets.right, (int)wud->insets.top, (int)wud->insets.bottom,
         (int) ( wud->insets.left + wud->insets.right ), (int) (wud->insets.top + wud->insets.bottom), wud->isInCreation);
     if( !wud->isInCreation ) {
-        return (*env)->CallBooleanMethod(env, window, insetsChangedID, 
-                                         JNI_FALSE, (int)wud->insets.left, (int)wud->insets.right, (int)wud->insets.top, (int)wud->insets.bottom);
+        jboolean res =  (*env)->CallBooleanMethod(env, window, insetsChangedID, 
+                                                  JNI_FALSE, (int)wud->insets.left, (int)wud->insets.right, (int)wud->insets.top, (int)wud->insets.bottom);
+        NewtCommon_ExceptionCheck1_throwNewRuntimeException(env, "WindowsWindow.UpdateInsets: Exception occured at insetsChanged(..)");
+        return res;
     }
     return JNI_TRUE;
 }
@@ -815,11 +819,13 @@ static void WmSize(JNIEnv *env, WindowUserData * wud, HWND wnd, UINT type)
                 DBG_PRINT( "WindowsWindow: WmSize.X window %p - Leave J, maximized\n", (void*)wnd); 
                 return;
             }
+            NewtCommon_ExceptionCheck1_throwNewRuntimeException(env, "WindowsWindow.WmSize: Exception occured at maximizedChanged(..)");
         }
         if( JNI_FALSE == (*env)->CallBooleanMethod(env, window, sizeChangedID, JNI_FALSE, JNI_FALSE, wud->width, wud->height, JNI_FALSE) ) {
             DBG_PRINT( "WindowsWindow: WmSize.X window %p - Leave J, sizeChanged\n", (void*)wnd); 
             return;
         }
+        NewtCommon_ExceptionCheck1_throwNewRuntimeException(env, "WindowsWindow.WmSize: Exception occured at sizeChanged(..)");
     }
 }
 
@@ -941,9 +947,11 @@ static jboolean sendTouchScreenEvent(JNIEnv *env, jobject window,
     }
     (*env)->SetFloatArrayRegion(env, jPressure, 0, count, pressure);
 
-    return (*env)->CallBooleanMethod(env, window, sendTouchScreenEventID,
-                                     (jshort)eventType, (jint)modifiers, (jint)actionIdx,
-                                     jNames, jX, jY, jPressure, (jfloat)maxPressure);
+    jboolean res = (*env)->CallBooleanMethod(env, window, sendTouchScreenEventID,
+                                             (jshort)eventType, (jint)modifiers, (jint)actionIdx,
+                                             jNames, jX, jY, jPressure, (jfloat)maxPressure);
+    NewtCommon_ExceptionCheck1_throwNewRuntimeException(env, "WindowsWindow.wndProc: Exception occured at sendTouchScreenEvent(..)");
+    return res;
 }
     
 // #define DO_ERASEBKGND 1
@@ -982,6 +990,7 @@ static LRESULT CALLBACK wndProc(HWND wnd, UINT message, WPARAM wParam, LPARAM lP
         //     WM_CLOSE -> Java::windowDestroyNotify -> W_DESTROY
         case WM_CLOSE:
             (*env)->CallBooleanMethod(env, window, windowDestroyNotifyID, JNI_FALSE);
+            NewtCommon_ExceptionCheck1_throwNewRuntimeException(env, "WindowsWindow.wndProc: Exception occured at windowDestroyNotify(..)");
             break;
 
         case WM_DESTROY:
@@ -1073,6 +1082,7 @@ static LRESULT CALLBACK wndProc(HWND wnd, UINT message, WPARAM wParam, LPARAM lP
             wud->visible = wParam==TRUE;
             if( !wud->isInCreation ) {
                 (*env)->CallBooleanMethod(env, window, visibleChangedID, wParam==TRUE?JNI_TRUE:JNI_FALSE);
+                NewtCommon_ExceptionCheck1_throwNewRuntimeException(env, "WindowsWindow.wndProc: Exception occured at visibleChanged(..)");
             }
             break;
 
@@ -1082,6 +1092,7 @@ static LRESULT CALLBACK wndProc(HWND wnd, UINT message, WPARAM wParam, LPARAM lP
             DBG_PRINT("*** WindowsWindow: WM_MOVE window %p, %d/%d, at-init %d\n", wnd, wud->xpos, wud->ypos, wud->isInCreation);
             if( !wud->isInCreation ) {
                 (*env)->CallBooleanMethod(env, window, positionChangedID, JNI_FALSE, JNI_FALSE, (jint)wud->xpos, (jint)wud->ypos);
+                NewtCommon_ExceptionCheck1_throwNewRuntimeException(env, "WindowsWindow.wndProc: Exception occured at positionChanged(..)");
             }
             useDefWindowProc = 1;
             break;
@@ -1108,6 +1119,7 @@ static LRESULT CALLBACK wndProc(HWND wnd, UINT message, WPARAM wParam, LPARAM lP
                     // Let NEWT render the whole client area by issueing repaint for it, w/o looping through erase background
                     ValidateRect(wnd, NULL); // clear all!
                     (*env)->CallBooleanMethod(env, window, windowRepaintID, JNI_FALSE, 0, 0, -1, -1);
+                    NewtCommon_ExceptionCheck1_throwNewRuntimeException(env, "WindowsWindow.wndProc: Exception occured at windowRepaint(..)");
                 } else {
                     DBG_PRINT("*** WindowsWindow: WM_PAINT.1 (clean)\n");
                     // shall not happen ?
@@ -1142,6 +1154,7 @@ static LRESULT CALLBACK wndProc(HWND wnd, UINT message, WPARAM wParam, LPARAM lP
                 DBG_PRINT("*** WindowsWindow: WM_ERASEBKGND.1 (repaint)\n");
                 ValidateRect(wnd, NULL); // clear all!
                 (*env)->CallBooleanMethod(env, window, windowRepaintID, JNI_FALSE, 0, 0, -1, -1);
+                NewtCommon_ExceptionCheck1_throwNewRuntimeException(env, "WindowsWindow.wndProc: Exception occured at windowRepaint(..)");
                 res = 1; // return 1 == done, OpenGL, etc .. erases the background, hence we claim to have just done this
             }
             break;
@@ -1196,6 +1209,7 @@ static LRESULT CALLBACK wndProc(HWND wnd, UINT message, WPARAM wParam, LPARAM lP
             wud->focused = TRUE;
             if( !wud->isInCreation ) {
                 (*env)->CallBooleanMethod(env, window, focusChangedID, JNI_FALSE, JNI_TRUE);
+                NewtCommon_ExceptionCheck1_throwNewRuntimeException(env, "WindowsWindow.wndProc: Exception occured at focusChanged(..)");
             }
             useDefWindowProc = 1;
             break;
@@ -1212,6 +1226,7 @@ static LRESULT CALLBACK wndProc(HWND wnd, UINT message, WPARAM wParam, LPARAM lP
                 wud->focused = FALSE;
                 if( !wud->isInCreation ) {
                     (*env)->CallBooleanMethod(env, window, focusChangedID, JNI_FALSE, JNI_FALSE);
+                    NewtCommon_ExceptionCheck1_throwNewRuntimeException(env, "WindowsWindow.wndProc: Exception occured at focusChanged(..)");
                 }
                 useDefWindowProc = 1;
             } else {
@@ -1273,11 +1288,13 @@ static LRESULT CALLBACK wndProc(HWND wnd, UINT message, WPARAM wParam, LPARAM lP
                         NewtWindows_trackPointerLeave(wnd);
                     }
                     (*env)->CallVoidMethod(env, window, requestFocusID, JNI_FALSE);
+                    NewtCommon_ExceptionCheck1_throwNewRuntimeException(env, "WindowsWindow.wndProc: Exception occured at requestFocus(..)");
                     (*env)->CallBooleanMethod(env, window, sendMouseEventID,
                                               (jshort) EVENT_MOUSE_PRESSED,
                                               GetModifiers( 0 ),
                                               (jint) GET_X_LPARAM(lParam), (jint) GET_Y_LPARAM(lParam),
                                               (jshort) 1, (jfloat) 0.0f);
+                    NewtCommon_ExceptionCheck1_throwNewRuntimeException(env, "WindowsWindow.wndProc: Exception occured at sendMouseEvent(..)");
                     useDefWindowProc = 1;
                 }
             }
@@ -1305,6 +1322,7 @@ static LRESULT CALLBACK wndProc(HWND wnd, UINT message, WPARAM wParam, LPARAM lP
                                               GetModifiers( 0 ),
                                               (jint) GET_X_LPARAM(lParam), (jint) GET_Y_LPARAM(lParam),
                                               (jshort) 1, (jfloat) 0.0f);
+                    NewtCommon_ExceptionCheck1_throwNewRuntimeException(env, "WindowsWindow.wndProc: Exception occured at sendMouseEvent(..)");
                     useDefWindowProc = 1;
                 }
             }
@@ -1320,11 +1338,13 @@ static LRESULT CALLBACK wndProc(HWND wnd, UINT message, WPARAM wParam, LPARAM lP
                         NewtWindows_trackPointerLeave(wnd);
                     }
                     (*env)->CallVoidMethod(env, window, requestFocusID, JNI_FALSE);
+                    NewtCommon_ExceptionCheck1_throwNewRuntimeException(env, "WindowsWindow.wndProc: Exception occured at requestFocus(..)");
                     (*env)->CallBooleanMethod(env, window, sendMouseEventID,
                                               (jshort) EVENT_MOUSE_PRESSED,
                                               GetModifiers( 0 ),
                                               (jint) GET_X_LPARAM(lParam), (jint) GET_Y_LPARAM(lParam),
                                               (jshort) 2, (jfloat) 0.0f);
+                    NewtCommon_ExceptionCheck1_throwNewRuntimeException(env, "WindowsWindow.wndProc: Exception occured at sendMouseEvent(..)");
                     useDefWindowProc = 1;
                 }
             }
@@ -1349,6 +1369,7 @@ static LRESULT CALLBACK wndProc(HWND wnd, UINT message, WPARAM wParam, LPARAM lP
                                               GetModifiers( 0 ),
                                               (jint) GET_X_LPARAM(lParam), (jint) GET_Y_LPARAM(lParam),
                                               (jshort) 2, (jfloat) 0.0f);
+                    NewtCommon_ExceptionCheck1_throwNewRuntimeException(env, "WindowsWindow.wndProc: Exception occured at sendMouseEvent(..)");
                     useDefWindowProc = 1;
                 }
             }
@@ -1364,11 +1385,13 @@ static LRESULT CALLBACK wndProc(HWND wnd, UINT message, WPARAM wParam, LPARAM lP
                         NewtWindows_trackPointerLeave(wnd);
                     }
                     (*env)->CallVoidMethod(env, window, requestFocusID, JNI_FALSE);
+                    NewtCommon_ExceptionCheck1_throwNewRuntimeException(env, "WindowsWindow.wndProc: Exception occured at requestFocus(..)");
                     (*env)->CallBooleanMethod(env, window, sendMouseEventID,
                                               (jshort) EVENT_MOUSE_PRESSED,
                                               GetModifiers( 0 ),
                                               (jint) GET_X_LPARAM(lParam), (jint) GET_Y_LPARAM(lParam),
                                               (jshort) 3, (jfloat) 0.0f);
+                    NewtCommon_ExceptionCheck1_throwNewRuntimeException(env, "WindowsWindow.wndProc: Exception occured at sendMouseEvent(..)");
                     useDefWindowProc = 1;
                 }
             }
@@ -1393,6 +1416,7 @@ static LRESULT CALLBACK wndProc(HWND wnd, UINT message, WPARAM wParam, LPARAM lP
                                               GetModifiers( 0 ),
                                               (jint) GET_X_LPARAM(lParam), (jint) GET_Y_LPARAM(lParam),
                                               (jshort) 3,  (jfloat) 0.0f);
+                    NewtCommon_ExceptionCheck1_throwNewRuntimeException(env, "WindowsWindow.wndProc: Exception occured at sendMouseEvent(..)");
                     useDefWindowProc = 1;
                 }
             }
@@ -1418,6 +1442,7 @@ static LRESULT CALLBACK wndProc(HWND wnd, UINT message, WPARAM wParam, LPARAM lP
                                               modifiers,
                                               (jint) GET_X_LPARAM(lParam), (jint) GET_Y_LPARAM(lParam),
                                               (jshort) 0,  (jfloat) 0.0f);
+                    NewtCommon_ExceptionCheck1_throwNewRuntimeException(env, "WindowsWindow.wndProc: Exception occured at sendMouseEvent(..)");
                 }
                 useDefWindowProc = 1;
             }
@@ -1433,6 +1458,7 @@ static LRESULT CALLBACK wndProc(HWND wnd, UINT message, WPARAM wParam, LPARAM lP
                                               0,
                                               (jint) -1, (jint) -1, // fake
                                               (jshort) 0,  (jfloat) 0.0f);
+                    NewtCommon_ExceptionCheck1_throwNewRuntimeException(env, "WindowsWindow.wndProc: Exception occured at sendMouseEvent(..)");
                     useDefWindowProc = 1;
                 }
             }
@@ -1463,6 +1489,7 @@ static LRESULT CALLBACK wndProc(HWND wnd, UINT message, WPARAM wParam, LPARAM lP
                                           modifiers,
                                           (jint) 0, (jint) 0,
                                           (jshort) 1,  (jfloat) rotation);
+                NewtCommon_ExceptionCheck1_throwNewRuntimeException(env, "WindowsWindow.wndProc: Exception occured at sendMouseEvent(..)");
                 useDefWindowProc = 1;
                 break;
             }
@@ -1492,6 +1519,7 @@ static LRESULT CALLBACK wndProc(HWND wnd, UINT message, WPARAM wParam, LPARAM lP
                                       modifiers,
                                       (jint) eventPt.x, (jint) eventPt.y,
                                       (jshort) 1,  (jfloat) rotationOrTilt);
+            NewtCommon_ExceptionCheck1_throwNewRuntimeException(env, "WindowsWindow.wndProc: Exception occured at sendMouseEvent(..)");
             useDefWindowProc = 1;
             break;
         }
@@ -1579,6 +1607,7 @@ static LRESULT CALLBACK wndProc(HWND wnd, UINT message, WPARAM wParam, LPARAM lP
 
                     if( sendFocus ) {
                         (*env)->CallVoidMethod(env, window, requestFocusID, JNI_FALSE);
+                        NewtCommon_ExceptionCheck1_throwNewRuntimeException(env, "WindowsWindow.wndProc: Exception occured at requestFocus(..)");
                     }
                     int sentCount = 0, updownCount=0, moveCount=0;
                     // Primary first, if available!
@@ -2462,6 +2491,7 @@ JNIEXPORT void JNICALL Java_jogamp_newt_driver_windows_WindowDriver_InitWindow0
 
     if( wud->isMaximized ) {
         (*env)->CallBooleanMethod(env, wud->jinstance, maximizedChangedID, JNI_TRUE, JNI_TRUE);
+        NewtCommon_ExceptionCheck1_throwNewRuntimeException(env, "WindowsWindow.InitWindow: Exception occured at maximizedChanged(..)");
     }
     (*env)->CallBooleanMethod(env, wud->jinstance, sizePosInsetsFocusVisibleChangedID, JNI_FALSE, JNI_FALSE,
                            (jint)wud->xpos, (jint)wud->ypos,
@@ -2470,6 +2500,7 @@ JNIEXPORT void JNICALL Java_jogamp_newt_driver_windows_WindowDriver_InitWindow0
                            (jint)(wud->focused ? 1 : 0),
                            (jint)(wud->visible ? 1 : 0),
                            JNI_FALSE);
+    NewtCommon_ExceptionCheck1_throwNewRuntimeException(env, "WindowsWindow.InitWindow: Exception occured at sizePosInsetsFocusVisibleChanged(..)");
     DBG_PRINT("*** WindowsWindow: InitWindow JNI callbacks done\n");
 
     if( wud->supportsMTouch ) {
diff --git a/src/newt/native/bcm_egl.c b/src/newt/native/bcm_egl.c
index 9b960d278..88e214a1f 100644
--- a/src/newt/native/bcm_egl.c
+++ b/src/newt/native/bcm_egl.c
@@ -1,4 +1,5 @@
 /*
+ * Copyright 2012-2023 JogAmp Community. All rights reserved.
  * Copyright (c) 2008 Sun Microsystems, Inc. All Rights Reserved.
  * 
  * Redistribution and use in source and binary forms, with or without
@@ -144,6 +145,7 @@ JNIEXPORT jlong JNICALL Java_jogamp_newt_driver_bcm_egl_WindowDriver_CreateWindo
         return 0;
     }
     (*env)->CallVoidMethod(env, obj, windowCreatedID, (jint) cfgID, (jint)uiWidth, (jint)uiHeight);
+    NewtCommon_ExceptionCheck1_throwNewRuntimeException(env, "BcmEGLWindow.CreateWindow: Exception occured at windowCreated(..)");
     DBG_PRINT( "[RealizeWindow.Create] ok: win %p, cfgid %d, %ux%u\n", window, cfgID, uiWidth, uiHeight);
 
     // release and destroy already made context ..
diff --git a/src/newt/native/bcm_vc_iv.c b/src/newt/native/bcm_vc_iv.c
index 3a853fc5c..459bca124 100644
--- a/src/newt/native/bcm_vc_iv.c
+++ b/src/newt/native/bcm_vc_iv.c
@@ -1,5 +1,5 @@
 /**
- * Copyright 2012 JogAmp Community. All rights reserved.
+ * Copyright 2012-2023 JogAmp Community. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without modification, are
  * permitted provided that the following conditions are met:
@@ -318,6 +318,7 @@ JNIEXPORT void JNICALL Java_jogamp_newt_driver_bcm_vc_iv_ScreenDriver_initNative
     if( graphics_get_display_size(0 /* LCD */, &screen_width, &screen_height) >= 0 ) {
         DBG_PRINT( "BCM.Screen initNative ok %dx%d\n", screen_width, screen_height );
         (*env)->CallVoidMethod(env, obj, setScreenSizeID, (jint) screen_width, (jint) screen_height);
+        NewtCommon_ExceptionCheck1_throwNewRuntimeException(env, "BcmVcIvWindow.initNative: Exception occured at setScreenSize(..)");
     } else {
         DBG_PRINT( "BCM.Screen initNative failed\n" );
     }
@@ -398,6 +399,7 @@ JNIEXPORT jlong JNICALL Java_jogamp_newt_driver_bcm_vc_iv_WindowDriver_CreateWin
    vc_dispmanx_update_submit_sync( dispman_update );
 
    (*env)->CallBooleanMethod(env, obj, visibleChangedID, JNI_TRUE);
+   NewtCommon_ExceptionCheck1_throwNewRuntimeException(env, "BcmVcIvWindow.CreateWindow: Exception occured at visibleChanged(..)");
 
    DBG_PRINT( "BCM.Display Window.Create.X %p, element %p\n", 
     (void*)(intptr_t)dispman_display, (void*)(intptr_t)p->handle);
@@ -451,9 +453,11 @@ JNIEXPORT void JNICALL Java_jogamp_newt_driver_bcm_vc_iv_WindowDriver_reconfigur
     bcm_moveTo( p->handle, p->layer, p->x, p->y, p->width, p->height);
     if( posChanged ) {
         (*env)->CallBooleanMethod(env, obj, positionChangedID, JNI_FALSE, JNI_FALSE, x, y);
+        NewtCommon_ExceptionCheck1_throwNewRuntimeException(env, "BcmVcIvWindow.reconfigure: Exception occured at positionChanged(..)");
     }
     if( sizeChanged ) {
         (*env)->CallBooleanMethod(env, obj, sizeChangedID, JNI_FALSE, JNI_FALSE, width, height, JNI_FALSE);
+        NewtCommon_ExceptionCheck1_throwNewRuntimeException(env, "BcmVcIvWindow.reconfigure: Exception occured at sizeChanged(..)");
     }
 }
 
diff --git a/src/newt/native/drm_gbm.c b/src/newt/native/drm_gbm.c
index 722c11a49..867ded607 100644
--- a/src/newt/native/drm_gbm.c
+++ b/src/newt/native/drm_gbm.c
@@ -1,5 +1,5 @@
 /**
- * Copyright 2019 JogAmp Community. All rights reserved.
+ * Copyright 2019-2023 JogAmp Community. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without modification, are
  * permitted provided that the following conditions are met: