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又开始安静的敲代码了。刚用了用UCGUI，移植好了准备用UCGUI懒人工具设计界面的时候，电脑出现状况了呀。有遇到过着情况的来帮忙解决一下。

这次是将字库放在SD卡中，来分享一下UCGUI用外部FLASH字库的方法。16_24_32HZK.zip

ucgui中，字符显示的底层函数是 GUICharP.c 中的 void GUIPROP_DispChar(U16P c) 函数，我们将这个函数修改如下:

/*********************************************************************
*
*       GUIPROP_DispChar
*
* Purpose:
*   This is the routine that displays a character. It is used by all
*   other routines which display characters as a subroutine.
*/
extern U8 acFont8x16[][16];
void GUIPROP_DispChar(U16P c) {
    int BytesPerLine;
  U8 BytesPerFont;  //一个字的字节数   
  U32 base,oft;     //字库的起始地址和偏移量   
   unsigned char i_table = 0;  
  GUI_DRAWMODE DrawMode = GUI_Context.TextMode;
  const GUI_FONT_PROP GUI_UNI_PTR * pProp = GUIPROP_FindChar(GUI_Context.pAFont->p.pProp, c);
  if (pProp) {
    GUI_DRAWMODE OldDrawMode;
    const GUI_CHARINFO GUI_UNI_PTR * pCharInfo;
        //支持3种字体==     
    if((GUI_Context.pAFont == &GUI_FontHZ16))
    {
        pCharInfo = pProp->paCharInfo;

        base = (U32)pProp->paCharInfo->pData;
        BytesPerFont = GUI_Context.pAFont->YSize * pProp->paCharInfo->BytesPerLine; //每个字模的数据字节数          
        if (BytesPerFont > BYTES_PER_FONT)
        {
            BytesPerFont = BYTES_PER_FONT;
        } 
        if (c < 0x80) //英文字符地址偏移算法          
        { 
//			GUI_SetFont(&GUI_Font8x16);
//			GUI_DispCharAt(c,GUI_Context.DispPosX,GUI_Context.DispPosY);
//			GUI_SetFont(&GUI_FontHZ16);//oft = base + (c - 0x20) * BytesPerFont; //计算出字码在flash中的偏移地址  
			for(i_table = 0;i_table < 16;i_table++)
			{
				GUI_FontDataBuf[i_table] = acFont8x16[c-0x20][i_table];	
			}
		}
        else //中文字符地址偏移算法          
        {
            oft = base + (((c>>8) - 0xa1) * 94 + ((c&0xff) - 0xa1)) * BytesPerFont; 
			LCD_ReadFlashBit(oft, GUI_FontDataBuf, BytesPerFont);//取出字模数据 
		}	
		       
        BytesPerLine = pCharInfo->BytesPerLine;
        OldDrawMode  = LCD_SetDrawMode(DrawMode);        

        LCD_DrawBitmap( GUI_Context.DispPosX, 
                        GUI_Context.DispPosY,
                        pCharInfo->XSize,
                        GUI_Context.pAFont->YSize,
                        GUI_Context.pAFont->XMag,
                        GUI_Context.pAFont->YMag,
                        1,     /* Bits per Pixel */                         
                        BytesPerLine,
                        GUI_FontDataBuf,
                        &LCD_BKCOLORINDEX
                        );
		 
    }
        //--    
         else     {
        pCharInfo = pProp->paCharInfo+(c-pProp->First);
        BytesPerLine = pCharInfo->BytesPerLine;
        OldDrawMode  = LCD_SetDrawMode(DrawMode);        
        LCD_DrawBitmap( GUI_Context.DispPosX, 
                        GUI_Context.DispPosY,
                        pCharInfo->XSize,
                        GUI_Context.pAFont->YSize,
                        GUI_Context.pAFont->XMag,
                        GUI_Context.pAFont->YMag,
                        1,     /* Bits per Pixel */                         
                        BytesPerLine,
                        pCharInfo->pData,
                        &LCD_BKCOLORINDEX
                        );
    }


    /* Fill empty pixel lines */    
     if (GUI_Context.pAFont->YDist > GUI_Context.pAFont->YSize) {
      int YMag = GUI_Context.pAFont->YMag;
      int YDist = GUI_Context.pAFont->YDist * YMag;
      int YSize = GUI_Context.pAFont->YSize * YMag;
      if (DrawMode != LCD_DRAWMODE_TRANS) {
        LCD_COLOR OldColor = GUI_GetColor();
        GUI_SetColor(GUI_GetBkColor());
        LCD_FillRect(GUI_Context.DispPosX, 
                     GUI_Context.DispPosY + YSize, 
                     GUI_Context.DispPosX + pCharInfo->XSize, 
                     GUI_Context.DispPosY + YDist);
        GUI_SetColor(OldColor);
      }
    }
    LCD_SetDrawMode(OldDrawMode); /* Restore draw mode */     
    GUI_Context.DispPosX += pCharInfo->XDist * GUI_Context.pAFont->XMag;
  }
}

 在GUI.H中添加汉字库在flash中的首地址，及字库声明

/*汉字*/ //汉字库在FLASH中的首地址 
#define GUI_FontHZ16_Flash_BaseAddr  0x0 
#define GUI_FontHZ24_Flash_BaseAddr  0x00045080 
#define GUI_FontHZ32_Flash_BaseAddr  0x000E05A0 
extern GUI_CONST_STORAGE  GUI_FONT GUI_FontHZ16;
extern GUI_CONST_STORAGE  GUI_FONT GUI_FontHZ24;
extern GUI_CONST_STORAGE  GUI_FONT GUI_FontHZ32;

    注意三个字库的起始地址与GUI.h中定义的应该是一样的。还有字库生成时，也应该是标准的汉字库，满足 oft = base + (((c>>8) - 0xa1) * 94 + ((c&0xff) - 0xa1)) * BytesPerFont; 的计算方式。 

    完成之后就可以直接这样操作了哟：GUI_DispStringAt("GUI初始化完毕",10,10);