nano-X做網路設定視窗。

 #include <stdio.h>
 #include "nano-X.h"
 #include "nxcolors.h"

 int main()
 {
     GR_WINDOW_ID root_wid, wid;
     GR_WINDOW_ID child;
     GR_WINDOW_ID sibling;
     GR_GC_ID gc;
     GR_COORD x, y;
     GR_SIZE width, height;
     GR_EVENT event;
 
     x = 0;
     y = 0;
     width = 640;
     height = 480;
 
     if (GrOpen() < 0)
     {
         printf("Can't open graphics/n");
         return 0;
     }
 
     gc = GrNewGC();
     // 建立父視窗（根視窗）
     root_wid = GrNewWindow(GR_ROOT_WINDOW_ID, x, y, width, height,
             1, GR_COLOR_GRAY, GR_COLOR_BLACK);
     // 建立一個子視窗
     wid = GrNewWindow(root_wid, 150,40 , 260, 310, 1, GR_COLOR_GRAY, GR_COLOR_WHITE);
     GrMapWindow(root_wid);  // 繪製父視窗

     child = GrNewWindow(root_wid, 180, 75, 200, 40, 1, GR_COLOR_GRAY, GR_COLOR_WHITE);
     GrMapWindow(child);  // 繪製子視窗

     sibling = GrNewWindow(child, 0, 0, 50, 50, 1, GR_COLOR_BLACK, GR_COLOR_WHITE);
     GrMapWindow(sibling);  // 繪製孫視窗
     sibling = GrNewWindow(child, 50, 0, 50, 50, 1, GR_COLOR_BLACK, GR_COLOR_WHITE);
     GrMapWindow(sibling);  // 繪製孫視窗
     sibling = GrNewWindow(child, 100, 0, 50, 50, 1, GR_COLOR_BLACK, GR_COLOR_WHITE);
     GrMapWindow(sibling);  // 繪製孫視窗
     sibling = GrNewWindow(child, 150, 0, 50, 50, 1, GR_COLOR_BLACK, GR_COLOR_WHITE);
     GrMapWindow(sibling);  // 繪製孫視窗

     child = GrNewWindow(root_wid, 180, 125, 200, 40, 1, GR_COLOR_BLACK, GR_COLOR_WHITE);
     GrMapWindow(child);  // 繪製子視窗

     sibling = GrNewWindow(child, 0, 0, 50, 50, 1, GR_COLOR_BLACK, GR_COLOR_WHITE);
     GrMapWindow(sibling);  // 繪製孫視窗
     sibling = GrNewWindow(child, 50, 0, 50, 50, 1, GR_COLOR_BLACK, GR_COLOR_WHITE);
     GrMapWindow(sibling);  // 繪製孫視窗
     sibling = GrNewWindow(child, 100, 0, 50, 50, 1, GR_COLOR_BLACK, GR_COLOR_WHITE);
     GrMapWindow(sibling);  // 繪製孫視窗
     sibling = GrNewWindow(child, 150, 0, 50, 50, 1, GR_COLOR_BLACK, GR_COLOR_WHITE);
     GrMapWindow(sibling);  // 繪製孫視窗

     child = GrNewWindow(root_wid, 180, 175, 200, 40, 1, GR_COLOR_BLACK, GR_COLOR_WHITE);
     GrMapWindow(child);  // 繪製子視窗

     sibling = GrNewWindow(child, 0, 0, 50, 50, 1, GR_COLOR_BLACK, GR_COLOR_WHITE);
     GrMapWindow(sibling);  // 繪製孫視窗
     sibling = GrNewWindow(child, 50, 0, 50, 50, 1, GR_COLOR_BLACK, GR_COLOR_WHITE);
     GrMapWindow(sibling);  // 繪製孫視窗
     sibling = GrNewWindow(child, 100, 0, 50, 50, 1, GR_COLOR_BLACK, GR_COLOR_WHITE);
     GrMapWindow(sibling);  // 繪製孫視窗
     sibling = GrNewWindow(child, 150, 0, 50, 50, 1, GR_COLOR_BLACK, GR_COLOR_WHITE);
     GrMapWindow(sibling);  // 繪製孫視窗

     child = GrNewWindow(root_wid, 180, 225, 200, 40, 1, GR_COLOR_BLACK, GR_COLOR_WHITE);
     GrMapWindow(child);  // 繪製子視窗

     sibling = GrNewWindow(child, 0, 0, 50, 50, 1, GR_COLOR_BLACK, GR_COLOR_WHITE);
     GrMapWindow(sibling);  // 繪製孫視窗
     sibling = GrNewWindow(child, 50, 0, 50, 50, 1, GR_COLOR_BLACK, GR_COLOR_WHITE);
     GrMapWindow(sibling);  // 繪製孫視窗
     sibling = GrNewWindow(child, 100, 0, 50, 50, 1, GR_COLOR_BLACK, GR_COLOR_WHITE);
     GrMapWindow(sibling);  // 繪製孫視窗
     sibling = GrNewWindow(child, 150, 0, 50, 50, 1, GR_COLOR_BLACK, GR_COLOR_WHITE);
     GrMapWindow(sibling);  // 繪製孫視窗

     child = GrNewWindow(root_wid, 180, 275, 200, 40, 1, GR_COLOR_BLACK, GR_COLOR_WHITE);
     GrMapWindow(child);  // 繪製子視窗

     sibling = GrNewWindow(child, 0, 0, 50, 50, 1, GR_COLOR_BLACK, GR_COLOR_WHITE);
     GrMapWindow(sibling);  // 繪製孫視窗
     sibling = GrNewWindow(child, 50, 0, 50, 50, 1, GR_COLOR_BLACK, GR_COLOR_WHITE);
     GrMapWindow(sibling);  // 繪製孫視窗
     sibling = GrNewWindow(child, 100, 0, 50, 50, 1, GR_COLOR_BLACK, GR_COLOR_WHITE);
     GrMapWindow(sibling);  // 繪製孫視窗
     sibling = GrNewWindow(child, 150, 0, 50, 50, 1, GR_COLOR_BLACK, GR_COLOR_WHITE);
     GrMapWindow(sibling);  // 繪製孫視窗
////////////////////////////
     child = GrNewWindow(root_wid, 200, 360, 60, 40, 1, GR_COLOR_GRAY, GR_COLOR_WHITE);
     GrMapWindow(child);  // 繪製子視窗
     // 顯示在子視窗中的文字
     GrSetGCForeground(gc, GR_COLOR_BLACK);   // 前景色彩（字型顏色）
     GrSetGCBackground(gc, GR_COLOR_GRAY); // 背景色（字型背景顏色）
     GrText(child, gc, 15, 25, "Cancel", -1, GR_TFBOTTOM);
////////////////////////////
////////////////////////////
     child = GrNewWindow(root_wid, 300, 360, 60, 40, 1, GR_COLOR_GRAY, GR_COLOR_WHITE);
     GrMapWindow(child);  // 繪製子視窗
     // 顯示在子視窗中的文字
     GrSetGCForeground(gc, GR_COLOR_BLACK);   // 前景色彩（字型顏色）
     GrSetGCBackground(gc, GR_COLOR_GRAY); // 背景色（字型背景顏色）
     GrText(child, gc, 20, 25, "OK", -1, GR_TFBOTTOM);
////////////////////////////

     GrMapWindow(wid);       // 繪製子視窗
 
     // 顯示在父視窗中的文字
     GrSetGCForeground(gc, GR_COLOR_RED);   // 前景色彩（字型顏色）
     GrSetGCBackground(gc, GR_COLOR_GRAY); // 背景色（字型背景顏色）
     GrText(root_wid, gc, 20, 20, "NET SETUP", -1, GR_TFBOTTOM);
     GrText(root_wid, gc, 50, 100, "* IP ADDRESS", -1, GR_TFBOTTOM);
     GrText(root_wid, gc, 50, 150, "* SUBNET", -1, GR_TFBOTTOM);
     GrText(root_wid, gc, 50, 200, "* GATEWAY", -1, GR_TFBOTTOM);
     GrText(root_wid, gc, 50, 250, "* DNS1", -1, GR_TFBOTTOM);
     GrText(root_wid, gc, 50, 300, "* DNS2", -1, GR_TFBOTTOM);
     // 顯示在子視窗中的文字
//     GrSetGCForeground(gc, GR_COLOR_RED);   // 前景色彩（字型顏色）
//     GrSetGCBackground(gc, GR_COLOR_GREEN); // 背景色（字型背景顏色）
//     GrText(child, gc, 0, 0, "Hello in wid", -1, GR_TFBOTTOM);
 
     for (;;)
     {
         GrGetNextEvent(&event);
     }
     GrClose();
 
     return 1;
 }