diff --git a/cocos2dx/platform/uphone/CCXBitmapDC.cpp b/cocos2dx/platform/uphone/CCXBitmapDC.cpp
index 90b01f0162..023d32006b 100644
--- a/cocos2dx/platform/uphone/CCXBitmapDC.cpp
+++ b/cocos2dx/platform/uphone/CCXBitmapDC.cpp
@@ -29,78 +29,120 @@ THE SOFTWARE.
 
 namespace cocos2d {
 
+    static TWindow * s_pMemWnd = NULL;
+
 	CCXBitmapDC::CCXBitmapDC(int width, int height)
+        : m_pBitmap(NULL)
 	{
-		m_pBitmap->Create(width, height, 32);
-		m_pWindow = NULL;
+        m_pBitmap = TBitmap::Create(width, height, 32);
 	}
+
 	CCXBitmapDC::CCXBitmapDC(const char *text, CGSize dimensions, UITextAlignment alignment, const char *fontName, float fontSize)
+        : m_pBitmap(NULL)
 	{
-		// create font
-		TFont font;
-		font.Create(0, (Int32)fontSize);
+        TUChar *pText = NULL; 
+        do 
+        {
+            // create font
+            TFont font;
+            CCX_BREAK_IF(! font.Create(0, (Int32)fontSize));
 
-		// text
-		Int32 len = strlen(text) + 1;
-		TUChar *pText = new TUChar[len];
-		TUString::StrGBToUnicode(pText, (Char*)text);
+            // text
+            Int32 len = strlen(text) + 1;
+            CCX_BREAK_IF(! (pText = new TUChar[len]));
+            TUString::StrGBToUnicode(pText, (Char*)text);
 
-		// calculate text size
-		if (CGSize::CGSizeEqualToSize(dimensions, CGSizeZero))
-		{
-			m_tSize.width = font.CharsWidth(pText,len);
-			m_tSize.height = font.LineHeight();
-		}else
-		{
-			m_tSize = dimensions;
-		}
+            // calculate text size
+            if (CGSize::CGSizeEqualToSize(dimensions, CGSizeZero))
+            {
+                m_tSize.width = font.CharsWidth(pText,len);
+                m_tSize.height = font.LineHeight();
+            }else
+            {
+                m_tSize = dimensions;
+            }
 
-		Int16 width = (Int16)m_tSize.width;
-		Int16 height = (Int16)m_tSize.height;
+            Int16 width = (Int16)m_tSize.width;
+            Int16 height = (Int16)m_tSize.height;
 
-		// create memory window
-		m_pWindow = new TWindow(CCXApplication::sharedApplication());
-		m_pWindow->CreateMemWindow(width, height,screenTransparentFormat);
+            // create bitmap
+            CCX_BREAK_IF(! (m_pBitmap = TBitmap::Create(width, height, 32)));
 
-		// create DC
-		TDC dc(m_pWindow);
-		// set DC styles
- 		UInt32 styles = GUI_API_STYLE_SPECIFY_FORE_COLOR |  GUI_API_STYLE_ROP_MODE_TRANSPARENT |
- 			 GUI_API_STYLE_SPECIFY_BACK_COLOR | GUI_API_STYLE_ALIGNMENT_MIDDLE | GUI_API_STYLE_SPECIFY_FONT;
+            // create memory window
+            if (s_pMemWnd)
+            {
+                TRectangle rcMemWnd(0, 0, 0, 0);
+                s_pMemWnd->GetClientBounds(&rcMemWnd);
+                if (rcMemWnd.Width() < width || rcMemWnd.Height() < height)
+                {
+                    s_pMemWnd->CloseWindow();
+                    s_pMemWnd = NULL;
+                }
+            }
 
-		switch (alignment)
-		{
-		case UITextAlignmentLeft:
-			styles |= GUI_API_STYLE_ALIGNMENT_LEFT;
-			break;
-		case UITextAlignmentCenter:
-			styles |= GUI_API_STYLE_ALIGNMENT_CENTER;
-			break;
-		case UITextAlignmentRight:
-			styles |= GUI_API_STYLE_ALIGNMENT_RIGHT;
-			break;
-		default:
-			styles |= GUI_API_STYLE_ALIGNMENT_CENTER;
-			break;
-		}
-		TRectangle rect;
-		m_pWindow->GetWindowFrameRect(&rect);
+            do 
+            {
+                // if memery window is already break
+                CCX_BREAK_IF(s_pMemWnd);
 
-		m_pBitmap = m_pWindow->GetMemWindowTBitmapPtr();
- 		m_pBitmap->Fill32(RGBA(0, 0, 0, 0));
-		
- 		dc.DrawTextInRectangleEx(pText, 0, RGBA(255,255,255,255), RGBA(0,0,0,255), font, &rect, styles);
+                CCX_BREAK_IF(! (s_pMemWnd = new TWindow(CCXApplication::sharedApplication())));
 
-		delete [] pText;
+                Coord nCurrentWidth = CCXApplication::GetCurrentApplication()->GetScreenWidth();
+                Coord nCurrentHeight = CCXApplication::GetCurrentApplication()->GetScreenHeight();
+                
+                Coord nMemWndW = (width >= nCurrentWidth) ? width : nCurrentWidth;
+                Coord nMemWndH = (height >= nCurrentHeight) ? height : nCurrentHeight;
+                CCX_BREAK_IF(s_pMemWnd->CreateMemWindow(nMemWndW, nMemWndH,screenTransparentFormat));
+                delete s_pMemWnd;
+                s_pMemWnd = NULL;
+            } while (0);
+
+            CCX_BREAK_IF(! s_pMemWnd);
+            
+            // create DC
+            TDC dc(s_pMemWnd);
+            // set DC styles
+            UInt32 styles = GUI_API_STYLE_SPECIFY_FORE_COLOR |  GUI_API_STYLE_ROP_MODE_TRANSPARENT |
+                GUI_API_STYLE_SPECIFY_BACK_COLOR | GUI_API_STYLE_ALIGNMENT_MIDDLE | GUI_API_STYLE_SPECIFY_FONT;
+
+            switch (alignment)
+            {
+            case UITextAlignmentLeft:
+                styles |= GUI_API_STYLE_ALIGNMENT_LEFT;
+                break;
+            case UITextAlignmentCenter:
+                styles |= GUI_API_STYLE_ALIGNMENT_CENTER;
+                break;
+            case UITextAlignmentRight:
+                styles |= GUI_API_STYLE_ALIGNMENT_RIGHT;
+                break;
+            default:
+                styles |= GUI_API_STYLE_ALIGNMENT_CENTER;
+                break;
+            }
+
+            s_pMemWnd->GetMemWindowTBitmapPtr()->Fill32(RGBA(0, 0, 0, 0), 0, 0, width, height);
+
+            TRectangle rect(0, 0, width, height);
+            dc.DrawTextInRectangleEx(pText, 0, RGBA(255,255,255,255), RGBA(0,0,0,255), font, &rect, styles);
+
+            dc.ReadBitmap(m_pBitmap, 0, 0);
+
+        } while (0);
+        if (pText)
+        {
+            delete[] pText;
+            pText = NULL;
+        }
 	}
 
 	CCXBitmapDC::~CCXBitmapDC(void)
 	{
-		if (m_pWindow)
-		{
-			m_pWindow->CloseWindowNow();
-			m_pWindow = NULL;
-		}
+        if (m_pBitmap)
+        {
+            m_pBitmap->Destroy();
+            m_pBitmap = NULL;
+        }
 	}
 
 	void *CCXBitmapDC::getBuffer()
diff --git a/cocos2dx/platform/uphone/CCXBitmapDC.h b/cocos2dx/platform/uphone/CCXBitmapDC.h
index 01caa992b2..fefadfa2c2 100644
--- a/cocos2dx/platform/uphone/CCXBitmapDC.h
+++ b/cocos2dx/platform/uphone/CCXBitmapDC.h
@@ -47,7 +47,6 @@ namespace cocos2d{
 	protected:
 		TBitmap *m_pBitmap;
 		CGSize m_tSize;
-		TWindow *m_pWindow;
 	};
 }
 
diff --git a/cocos2dx/platform/uphone/CCXUIImage_uphone.cpp b/cocos2dx/platform/uphone/CCXUIImage_uphone.cpp
index a7014a37fe..0b205aed79 100644
--- a/cocos2dx/platform/uphone/CCXUIImage_uphone.cpp
+++ b/cocos2dx/platform/uphone/CCXUIImage_uphone.cpp
@@ -83,6 +83,12 @@ UIImage::UIImage(void)
 
 UIImage::UIImage(CCXBitmapDC * pBmpDC)
 {
+    m_imageInfo.hasAlpha = false;
+    m_imageInfo.isPremultipliedAlpha = false;
+    m_imageInfo.height = 0;
+    m_imageInfo.width = 0;
+    m_imageInfo.data = NULL;
+    m_imageInfo.bitsPerComponent = 0;
 	do 
 	{
 		CCX_BREAK_IF(! pBmpDC);