win7自动壁纸切换小工具AutoDesk一：初始化托盘

win7的自带主题自动切换壁纸的功能挺不错，美中不足的是图片只能放本地，我一千多张背景图片占了不少磁盘空间，遂萌生写一个类似的自动切换软件，图片则从网上下载。

计划工具分两部分，一是本地切换部分，一是网上下载部分。先说本地切换部分。

本地切换部分，要实现的功能包括：初始化托盘，手动切换，定时切换，开机自启动等功能。

一，初始化托盘

这个功能博客园有很多文章，大家可以参考。基本上实现的功能包括，初始化时最小化到托盘，实现托盘右键菜单功能，双击显示主界面。

托盘的菜单如下图：

主界面就是“下一个”按钮。

 

拖动notifyicon控件到主窗体，拖动菜单到主窗体，设置notifyicon的菜单项为床窗体菜单。

窗体实现部分如下：

  1 using System;

  2 using System.Collections.Generic;

  3 using System.ComponentModel;

  4 using System.Data;

  5 using System.Drawing;

  6 using System.Linq;

  7 using System.Text;

  8 using System.Windows.Forms;

  9 

 10 using System.Runtime.InteropServices;

 11 using Microsoft.Win32;

 12 using System.IO;

 13 

 14 namespace AutoDesk

 15 {

 16     public partial class AutoDesk : Form

 17     {

 18         // 存放壁纸的文件位置

 19         private string m_deskpick_path = "E:\\deskPic";

 20         private string m_pick_name = "3.jpg";

 21         // 记录快捷键的键码

 22         private int Hotkey1;

 23         // 记录是否关闭窗体。

 24         private DialogResult m_dialogResult = DialogResult.No;

 25 

 26 

 27         public AutoDesk()

 28         {

 29             InitializeComponent();

 30             

 31         }

 32 

 33         /// <summary>

 34         /// 从m_deskpick_path文件夹中随即选取一个文件

 35         /// </summary>

 36         /// <returns></returns>

 37         private string get_random_pick_name()

 38         {

 39             Random random = new Random(Environment.TickCount);

 40             string pick_name = "3.jpg";

 41             DirectoryInfo dInfo = new DirectoryInfo(m_deskpick_path);

 42             FileInfo[] files = dInfo.GetFiles();//"*.jpg|*.gif|*.png|*.bmp");

 43             if (files != null && files.Length > 0)

 44             {

 45                 int index = random.Next(0, files.Length);

 46                 pick_name = files[index].Name;

 47             }

 48             return pick_name;

 49         }

 50 

 51         /// <summary>

 52         /// 通过IActiveDesktop接口切换桌面，

 53         /// IActiveDesktop接口切换桌面具有win7的渐变效果（fade effect或者称为slideshow）

 54         /// 而通过SystemParametersInfo函数也能实现切换壁纸，但是没有渐变效果。

 55         /// 

 56         /// </summary>

 57         private void switch_to_next_waller()

 58         {

 59             string strSavePath = Path.Combine(m_deskpick_path, get_random_pick_name());

 60             //WinAPI.SystemParametersInfo(20, 1, strSavePath, 1);

 61             IActiveDesktop iad = shlobj.GetActiveDesktop();

 62             iad.SetWallpaper(strSavePath, 0);

 63             iad.ApplyChanges(AD_Apply.ALL | AD_Apply.FORCE | AD_Apply.BUFFERED_REFRESH);

 64             System.Runtime.InteropServices.Marshal.ReleaseComObject(iad);

 65         }

 66 

 67         /// <summary>

 68         /// 主界面切换下一桌面的实现。

 69         /// </summary>

 70         /// <param name="sender"></param>

 71         /// <param name="e"></param>

 72         private void btn_center_Click(object sender, EventArgs e)

 73         {

 74             try

 75             {

 76                 switch_to_next_waller();

 77             }

 78             catch (Exception ex)

 79             {

 80                 MessageBox.Show(ex.Message);

 81             }

 82         }

 83 

 84         /// <summary>

 85         /// 最小化到托盘，要实现初始化到托盘，需要设置窗体的初始状态为最小化。

 86         /// </summary>

 87         /// <param name="sender"></param>

 88         /// <param name="e"></param>

 89         private void AutoDesk_SizeChanged(object sender, EventArgs e)

 90         {

 91             try

 92             {

 93                 if (this.WindowState == FormWindowState.Minimized)

 94                 {

 95                     this.Hide();

 96                     this.notifyIcon1.Visible = true;

 97                 }

 98             }

 99             catch (Exception ex)

100             {

101                 MessageBox.Show(ex.Message);

102             }

103         }

104 

105         /// <summary>

106         /// 

107         /// </summary>

108         /// <param name="sender"></param>

109         /// <param name="e"></param>

110         private void notifyIcon1_Click(object sender, EventArgs e)

111         {

112             try

113             {

114                 //this.Visible = true;

115                 //this.WindowState = FormWindowState.Normal;

116                 //this.notifyIcon1.Visible = false; 

117             }

118             catch (Exception ex)

119             {

120                 MessageBox.Show(ex.Message);

121             }

122         }

123 

124         /// <summary>

125         /// 菜单项实现切换到下一桌面

126         /// </summary>

127         /// <param name="sender"></param>

128         /// <param name="e"></param>

129         private void NextToolStripMenuItem_Click(object sender, EventArgs e)

130         {

131             try

132             {

133                 switch_to_next_waller();

134             }

135             catch (Exception ex)

136             {

137                 MessageBox.Show(ex.Message);

138             }

139 

140         }

141 

142         /// <summary>

143         /// 菜单项退出应用程序

144         /// </summary>

145         /// <param name="sender"></param>

146         /// <param name="e"></param>

147         private void exitToolStripMenuItem_Click(object sender, EventArgs e)

148         {

149             try

150             {

151                 m_dialogResult = System.Windows.Forms.DialogResult.Yes;

152                 this.Close();

153             }

154             catch (Exception ex)

155             {

156                 MessageBox.Show(ex.Message);

157             }

158         }

159 

160         /// <summary>

161         /// 菜单项显示主界面

162         /// </summary>

163         /// <param name="sender"></param>

164         /// <param name="e"></param>

165         private void showMainFrmToolStripMenuItem_Click(object sender, EventArgs e)

166         {

167             try

168             {

169                 this.Visible = true;

170                 this.WindowState = FormWindowState.Normal;

171                 

172             }

173             catch (Exception ex)

174             {

175                 MessageBox.Show(ex.Message);

176             }

177         }

178 

179         /// <summary>

180         /// 窗体关闭相应事件。如果是点击窗体的关闭按钮，则只是隐藏。

181         /// </summary>

182         /// <param name="sender"></param>

183         /// <param name="e"></param>

184         private void AutoDesk_FormClosing(object sender, FormClosingEventArgs e)

185         {

186             try

187             {

188                 if (m_dialogResult == System.Windows.Forms.DialogResult.Yes)

189                 {

190                     e.Cancel = false;

191                     Application.Exit();

192                 }

193                 else

194                 {

195                     e.Cancel = true;

196                     this.Hide();

197                 }

198             }

199             catch (Exception ex)

200             {

201                 MessageBox.Show(ex.Message);

202             }

203         }

204 

205         /// <summary>

206         /// 窗体启动时挂载全局快捷键Ctrl+F1.

207         /// </summary>

208         /// <param name="sender"></param>

209         /// <param name="e"></param>

210         private void AutoDesk_Load(object sender, EventArgs e)

211         {

212             try

213             {

214                 

215                  SystemHotKey.Hotkey hotkey;

216                  hotkey = new SystemHotKey.Hotkey(this.Handle);  

217        

218                  //定义快键(Ctrl + F1)  

219                  Hotkey1 = hotkey.RegisterHotkey(System.Windows.Forms.Keys.F1, SystemHotKey.Hotkey.KeyFlags.MOD_CONTROL);

220                  hotkey.OnHotkey += new SystemHotKey.HotkeyEventHandler(OnHotkey);

221 

222             }

223             catch (Exception ex)

224             {

225                 MessageBox.Show(ex.Message);

226             }

227         }

228 

229         /// <summary>

230         /// 快捷键按下后切换到下一个随即壁纸。

231         /// </summary>

232         /// <param name="HotkeyID"></param>

233          public void OnHotkey(int HotkeyID)  

234          {

235              try

236              {

237                  if (HotkeyID == Hotkey1)

238                  {

239                      switch_to_next_waller();

240                  }

241                  else

242                  {

243                      //this.Visible = false;  

244                  }

245              }

246              catch (Exception ex)

247              {

248                  MessageBox.Show(ex.Message);

249              }

250          }  

251 

252         /// <summary>

253         /// 托盘双击显示主界面

254         /// </summary>

255         /// <param name="sender"></param>

256         /// <param name="e"></param>

257         private void notifyIcon1_DoubleClick(object sender, EventArgs e)

258         {

259             try

260             {

261                 this.Visible = true;

262                 this.WindowState = FormWindowState.Normal;

263             }

264             catch (Exception ex)

265             {

266                 MessageBox.Show(ex.Message);

267             }

268         }

269     }

270 }