using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Runtime.InteropServices;
using System.Windows.Forms.Design;
namespace GetCards
{
  public partial class Form1 : Form
   {
     [DllImport("cards.dll")]
    public static extern bool cdtInit(ref int width, ref int height);
     [DllImport("cards.dll")]
    public static extern void cdtTerm();
     [DllImport("cards.dll")]
    public static extern bool cdtDraw(IntPtr hdc,int x,int y,int card,int mode,long color);
    //mode=0表正面,1表反面,Color我從0-0xFF000試了很多,好象沒顏色改變
    //[DllImport("cards.dll")]
    //public static extern bool cdtDrawExt(IntPtr hdc,int x,int y,int dx,int dy,int card,int type,long color);
    //[DllImport("cards.dll")]
    //public static extern bool cdtAnimate(IntPtr hdc,int cardback,int x,int y,int frame);
    int[] bb = new int[100];
    public Form1()
     {
       InitializeComponent();
     }
    private void Form1_Load(object sender, EventArgs e)
     {
      int width, height;
       width = 0; height = 0;
       cdtInit(ref width, ref height);
     }
    private void btn_PaintCard_Click(object sender, EventArgs e)
     {
      int i, k, left_x, top_y, CardId;
      for (k = 0; k <= 3; k++)
       {
        for (i = 1; i <= 13; i++)
         {
           left_x = 20 + (i - 1) * 15;        //牌的重疊后的寬度是15
           top_y = 20 + k * 100;           //每行13張牌.高度是20
           CardId = (i - 1) * 4 + k;         //原來52張牌是編了號的
           cdtDraw(this.CreateGraphics().GetHdc(), left_x, top_y, CardId, 0,9);
         }
       }
     }
    private void Form1_FormClosed(object sender, FormClosedEventArgs e)
     {
       cdtTerm();
     }
    private void btn_PaintBack_Click(object sender, EventArgs e)
     {
      int i, left_x, top_y, BackId;
      for (i = 0; i <= 11; i++)              //12張牌背面圖
       {
         BackId = i;
         top_y = 20 + (i & 3) * 100;           //小于等于3的不變,>3的截尾,相當于豎排
         left_x = 20 + (i >> 2) * 80 + 180 + 80;     //左邊牌占15*12+80=260,也就是和最右張牌20(隱含了牌大小=80)
         cdtDraw(this.CreateGraphics().GetHdc(), left_x, top_y, 54 + BackId, 1, 9);
       }
     }
    private void btn_Random1_Click(object sender, EventArgs e) //第一種方法實現隨機交換牌
     {
      int ii, k, left_x, top_y, CardId;
      int[] theArray = new int[52];
       Random r = new Random();
       listBox1.Items.Clear();
      for (int i = 0; i < 52; i++)
       {
         theArray[i] = i + 1;
       }
      for (int i = 0; i < 52; i++) //就是做52次隨機交換兩張牌
       {
        int a = r.Next(52); //生成0--->51的隨機數
        int b = r.Next(52);
        int tmp = theArray[a];
         theArray[a] = theArray[b];
         theArray[b] = tmp;
       }
      for (int i = 0; i < 52; i++)
       {
         listBox1.Items.Add(theArray[i]);
         k = (int)(i / 13);
         ii = i % 13 + 1;
         left_x = 20 + (ii - 1) * 15;
         top_y = 20 + k * 100;
         CardId = theArray[i] - 1;
         cdtDraw(this.CreateGraphics().GetHdc(), left_x, top_y, CardId, 0, 9);
       }
     }
    private void btn_Random2_Click(object sender, EventArgs e) //第一種方法實現隨機交換牌
     {
      int ii, k, left_x, top_y, CardId;
      int[] theArray = new int[52];
      int i = 0;
      while (i < theArray.Length)
       {
         theArray[i] = ++i;
       }
       Random r = new Random();
       listBox1.Items.Clear();
      while (i > 1) //從51-->1依次隨機向前交換獲得最終值
       {
        int j = r.Next(i);
        int t = theArray[--i];
         theArray[i] = theArray[j];
         theArray[j] = t;
       }
      for (i = 0; i < theArray.Length; ++i)
       {
         listBox1.Items.Add(theArray[i].ToString());
         k = (int)(i / 13);
         ii = i % 13 + 1;
         left_x = 20 + (ii - 1) * 15;
         top_y = 20 + k * 100;
         CardId = theArray[i] - 1;
         cdtDraw(this.CreateGraphics().GetHdc(), left_x, top_y, CardId, 0, 9);
       }
     }
   }
}