[ucgui] 彩色条函数

 /*
 颜色条
 */
 void ShowColorBar(void)
 {
     int x0 = , y0 = , yStep = , i;
     int NumColors = LCD_GetDevCap(LCD_DEVCAP_NUMCOLORS);
     int xsize = LCD_GetDevCap(LCD_DEVCAP_XSIZE) - x0;
     GUI_SetFont(&GUI_Font13HB_1);
     GUI_DispStringHCenterAt("μC/GUI-sample:Show color bars", , );
     GUI_SetFont(&GUI_Font8x8);
     GUI_SetColor(GUI_WHITE);
     GUI_SetBkColor(GUI_BLACK);
     #if(LCD_FIXEDPALETTE)
         GUI_DispString("Fixed palette: ");
         GUI_DispDecMin(LCD_FIXEDPALETTE);
     #endif
     GUI_DispStringAt("Red", , y0 + yStep);
     GUI_DispStringAt("Green", , y0 +  * yStep);
     GUI_DispStringAt("Blue", , y0 +  * yStep);
     GUI_DispStringAt("Grey", , y0 +  * yStep);
     GUI_DispStringAt("Yellow", , y0 +  * yStep);
     GUI_DispStringAt("Cyan", , y0 +  * yStep);
     GUI_DispStringAt("Magenta", , y0 +  * yStep);
     for(i=; i < xsize; i++)
     {
         U16 cs =( *(U32)i) / xsize;
         U16 x = x0 + i;
         /* 红色 */
         GUI_SetColor(cs);
         GUI_DrawVLine(x, y0, y0 +yStep - );
         GUI_SetColor(0xff +( - cs) * 0x10100L);
         GUI_DrawVLine(x, y0 +yStep, y0 +  * yStep - );
         /* 绿色 */
         GUI_SetColor(cs<<);
         GUI_DrawVLine(x, y0 +  * yStep, y0 +  * yStep - );
         GUI_SetColor(0xff00 +( - cs) * 0x10001L);
         GUI_DrawVLine(x, y0 +  * yStep, y0 +  * yStep - );
         /* 蓝色 */
         GUI_SetColor(cs * 0x10000L);
         GUI_DrawVLine(x, y0 +  * yStep, y0 +  * yStep - );
         GUI_SetColor(0xff0000 +( - cs) * 0x101L);
         GUI_DrawVLine(x, y0 +  * yStep, y0 +  * yStep - );
         /* 灰色 */
         GUI_SetColor((U32)cs * 0x10101L);
         GUI_DrawVLine(x, y0 +  * yStep, y0 +  * yStep - );
         /* 黄色 */
         GUI_SetColor(cs * 0x101);
         GUI_DrawVLine(x, y0 +  * yStep, y0 +  * yStep - );
         GUI_SetColor(0xffff +( - cs) * 0x10000L);
         GUI_DrawVLine(x, y0 +  * yStep, y0 +  * yStep - );
         /* 青色 */
         GUI_SetColor(cs * 0x10100L);
         GUI_DrawVLine(x, y0 +  * yStep, y0 +  * yStep - );
         GUI_SetColor(0xffff00 +( - cs) * 0x1L);
         GUI_DrawVLine(x, y0 +  * yStep, y0 +  * yStep - );
         /* 洋红 */
         GUI_SetColor(cs * 0x10001);
         GUI_DrawVLine(x, y0 +  * yStep, y0 +  * yStep - );
         GUI_SetColor(0xff00ff +( - cs) * 0x100L);
         GUI_DrawVLine(x, y0 +  * yStep, y0 +  * yStep - );
     }
 }