diff --git a/GUI/inc/SGUI_Text.h b/GUI/inc/SGUI_Text.h
index af317df..8789108 100644
--- a/GUI/inc/SGUI_Text.h
+++ b/GUI/inc/SGUI_Text.h
@@ -17,6 +17,7 @@
 
 #define SGUI_TEXT_DECODER_ASCII         SGUI_Text_StepNext_ASCII
 #define SGUI_TEXT_DECODER_GB2312        SGUI_Text_StepNext_GB2312
+#define SGUI_TEXT_DECODER_UTF8          SGUI_Text_StepNext_UTF8
 
 #define SGUI_TEXT_INDEXMAPPER_DIRECT    SGUI_Text_IndexMapper_Direct
 
@@ -38,6 +39,7 @@ SGUI_SIZE		SGUI_Text_DrawMultipleLinesText(SGUI_SCR_DEV* pstDeviceIF, SGUI_CSZST
 SGUI_SIZE		SGUI_Text_GetMultiLineTextLines(SGUI_CSZSTR cszText, const SGUI_FONT_RES* pstFontRes, SGUI_SIZE uiDisplayAreaWidth);
 SGUI_CSZSTR     SGUI_Text_StepNext_ASCII(SGUI_CSZSTR cszSrc, SGUI_UINT32* puiCode);
 SGUI_CSZSTR     SGUI_Text_StepNext_GB2312(SGUI_CSZSTR cszSrc, SGUI_UINT32* puiCode);
+SGUI_CSZSTR     SGUI_Text_StepNext_UTF8(SGUI_CSZSTR cszSrc, SGUI_UINT32* puiCode);
 SGUI_UINT32     SGUI_Text_IndexMapper_Direct(SGUI_UINT32 uiCode);
 
 #endif
diff --git a/GUI/src/SGUI_Basic.c b/GUI/src/SGUI_Basic.c
index dba3e45..5e0da4c 100644
--- a/GUI/src/SGUI_Basic.c
+++ b/GUI/src/SGUI_Basic.c
@@ -799,5 +799,5 @@ SGUI_COLOR SGUI_Basic_MapColor(const SGUI_UINT8 uiOriginDepthBits,const SGUI_COL
 {
 	SGUI_UINT16 uiOriginSpace=(1<<uiOriginDepthBits)-1;
 	SGUI_UINT16 uiTargetSpace=(1<<uiTargetDepthBits)-1;
-	return (SGUI_COLOR)floor(eOriginColor*1.0/uiOriginSpace*uiTargetSpace);
+	return (SGUI_COLOR)(eOriginColor*1.0/uiOriginSpace*uiTargetSpace);
 }
diff --git a/GUI/src/SGUI_Text.c b/GUI/src/SGUI_Text.c
index 971317c..ccc7c5e 100644
--- a/GUI/src/SGUI_Text.c
+++ b/GUI/src/SGUI_Text.c
@@ -331,7 +331,7 @@ SGUI_CSZSTR SGUI_Text_StepNext_ASCII(SGUI_CSZSTR cszSrc, SGUI_UINT32* puiCode)
 }
 
 /*************************************************************************/
-/** Function Name:	SGUI_Resource_StepNext_GB2312									    **/
+/** Function Name:	SGUI_Resource_StepNext_GB2312						**/
 /** Purpose:		Read current character code order by input pointer  **/
 /**                 and step to next character start pointer in GB2312. **/
 /** Resources:		None.												**/
@@ -375,3 +375,51 @@ SGUI_CSZSTR SGUI_Text_StepNext_GB2312(SGUI_CSZSTR cszSrc, SGUI_UINT32* puiCode)
 
 	return pcNextChar;
 }
+
+/*************************************************************************/
+/** Function Name:	SGUI_Resource_StepNext_UTF8 						**/
+/** Purpose:		Read current character code order by input pointer  **/
+/**                 and step to next character start pointer in UTF8.   **/
+/** Resources:		None.												**/
+/** Params:																**/
+/**	@ cszSrc[in]:	Current char pointer.								**/
+/**	@ puiCode[out]:	Character code read from string.    				**/
+/** Return:			Next character start pointer.   					**/
+/*************************************************************************/
+SGUI_CSZSTR SGUI_Text_StepNext_UTF8(SGUI_CSZSTR cszSrc, SGUI_UINT32* puiCode)
+{
+	/*----------------------------------*/
+	/* Variable Declaration				*/
+	/*----------------------------------*/
+	const SGUI_CHAR*            pcNextChar;
+	SGUI_UINT32					uiCode;
+    SGUI_UINT8                  uiTempByte;
+    SGUI_UINT8                  uiCharacterLength;
+	/*----------------------------------*/
+	/* Initialize						*/
+	/*----------------------------------*/
+	pcNextChar =                cszSrc;
+	uiCode     =				0;
+
+	/*----------------------------------*/
+	/* Process							*/
+	/*----------------------------------*/
+	if(NULL != pcNextChar)
+	{
+	    uiTempByte = *pcNextChar++;
+	    if(uiTempByte < 0x7F){
+            uiCode = uiTempByte;
+	    }else{
+	        while(uiTempByte & 0x80){
+                uiCharacterLength ++;
+                uiTempByte <<= 1;
+	        }
+	        uiCode |= uiTempByte >> uiCharacterLength;
+	        while((--uiCharacterLength)>0){
+                uiCode = (uiCode)<<6 | ((*pcNextChar++) & 0x3F);
+	        }
+	    }
+	}
+	*puiCode = uiCode;
+	return pcNextChar;
+}