昨天看到How To Geek里的一篇文章, 里面有個小程序做得覺得挺有意思, 那個程序可以改變Windows 7的縮略圖大小, 縮略圖與縮略圖之間的距離, 以及上下左右的邊距, 甚至還可以設置鼠標放到任務欄上多久顯示出縮略圖, 系統默認的是400ms, 感覺有點慢,　我把它調成了1, 鼠標一放上去就冒出縮略圖, 感覺非常的爽. 當然這些都是靠更改注冊表完成的.

我把那個程序下載下來, 用Reflector看一下那個程序, 終于知道是什么原理, 又花了好幾個小時實現了一遍, 當然我寫的代碼肯定沒人家好, 人家是美國的MVP, 我只是個菜鳥:)在這里把實現過程跟大家分享一下, 有哪些寫的不好的地方, 歡迎指教.

改變縮略圖后的大小(可以在這里面看電影了, 呵呵):

更改縮略圖的X-Spacing和Y-Spacing后(可以看到效果還是很明顯的):

程序的核心步驟:

在注冊表目錄HKEY_CURRENT_USER/Software/Microsoft/Windows /CurrentVersion/Explorer/Taskband下新建幾個鍵:MaxThumbSizePx, MinThumbSizePx, ThumbSpacingXPx, ThumbSpacingYPx, TopMarginPx, BottomMarginPx, LeftMarginPx, RightMarginPx 分別用于控制縮略圖尺寸, 兩個縮略圖直接的邊距, 還有縮略圖中內容的上下左右邊距

在注冊表目錄HKEY_CURRENT_USER/Software/Microsoft/Windows/CurrentVersion/Explorer/Advanced下新建一個鍵: ExtendedUIHoverTime

它用于控制縮略圖顯示的延遲時間(單位是ms)

每次更改完注冊表的信息后, 要看到效果不需要重新開機, 只需要關閉explore.exe, 再重新打開即可.

Private　Sub　btnApplySettings_Click(ByVal　sender　As　System.Object,　ByVal　e　As　System.EventArgs)　Handles　btnApplySettings.ClickMy.Computer.Registry.SetValue(path,　'MaxThumbSizePx',　Convert.ToInt32(maxSizeTrackBar.Value),　RegistryValueKind.DWord)My.Computer.Registry.SetValue(path,　'MinThumbSizePx',　Convert.ToInt32(miniSizeTrackBar.Value),　RegistryValueKind.DWord)My.Computer.Registry.SetValue(path,　'ThumbSpacingXPx',　Convert.ToInt32(xsTrackBar.Value),　RegistryValueKind.DWord)My.Computer.Registry.SetValue(path,　'ThumbSpacingYPx',　Convert.ToInt32(ysTrackBar.Value),　RegistryValueKind.DWord)My.Computer.Registry.SetValue(path,　'TopMarginPx',　Convert.ToInt32(tmTrackBar.Value),　RegistryValueKind.DWord)My.Computer.Registry.SetValue(path,　'BottomMarginPx',　Convert.ToInt32(bmTrackBar.Value),　RegistryValueKind.DWord)My.Computer.Registry.SetValue(path,　'LeftMarginPx',　Convert.ToInt32(lmTrackBar.Value),　RegistryValueKind.DWord)My.Computer.Registry.SetValue(path,　'RightMarginPx',　Convert.ToInt32(rmTrackBar.Value),　RegistryValueKind.DWord)My.Computer.Registry.SetValue('HKEY_CURRENT_USER/Software/Microsoft/Windows/CurrentVersion/Explorer/Advanced',　'ExtendedUIHoverTime',　Convert.ToInt32(dtTrackBar.Value),　RegistryValueKind.DWord)'修改注冊表后,重啟explore.exeDim　Explorers()　As　Process　=　Process.GetProcessesByName('explorer')For　Each　Explorer　As　Process　In　ExplorersExplorer.Kill()NextProcess.Start('explorer.exe')Explorers　=　NothingEnd　Sub

不用擔心的是, 如果你設置這個設置那個, 搞的很亂, 你可以恢復系統默認值:

Private　Sub　btnRestoreDefaults_Click(ByVal　sender　As　System.Object,　ByVal　e　As　System.EventArgs)　Handles　btnRestoreDefaults.ClickMy.Computer.Registry.SetValue(path,　'MaxThumbSizePx',　200,　RegistryValueKind.DWord)My.Computer.Registry.SetValue(path,　'MinThumbSizePx',　200,　RegistryValueKind.DWord)My.Computer.Registry.SetValue(path,　'ThumbSpacingXPx',　16,　RegistryValueKind.DWord)My.Computer.Registry.SetValue(path,　'ThumbSpacingYPx',　16,　RegistryValueKind.DWord)My.Computer.Registry.SetValue(path,　'TopMarginPx',　16,　RegistryValueKind.DWord)My.Computer.Registry.SetValue(path,　'BottomMarginPx',　16,　RegistryValueKind.DWord)My.Computer.Registry.SetValue(path,　'LeftMarginPx',　16,　RegistryValueKind.DWord)My.Computer.Registry.SetValue(path,　'RightMarginPx',　16,　RegistryValueKind.DWord)My.Computer.Registry.SetValue('HKEY_CURRENT_USER/Software/Microsoft/Windows/CurrentVersion/Explorer/Advanced',　'ExtendedUIHoverTime',　400,　RegistryValueKind.DWord)maxSizeTextBox.Text　=　'200'miniSizeTextBox.Text　=　'200'xsTextBox.Text　=　'16'ysTextBox.Text　=　'16'tmTextBox.Text　=　'16'bmTextBox.Text　=　'16'lmTextBox.Text　=　'16'rmTextBox.Text　=　'16'dtTextBox.Text　=　'400''修改注冊表后,重啟explore.exeDim　Explorers()　As　Process　=　Process.GetProcessesByName('explorer')For　Each　Explorer　As　Process　In　ExplorersExplorer.Kill()NextProcess.Start('explorer.exe')Explorers　=　NothingEnd　Sub

主要的代碼就是這樣, 下面是程序中所有的代碼:

Imports　Microsoft.Win32

Public　Class　mainFormDim　path　As　String　=　'HKEY_CURRENT_USER/Software/Microsoft/Windows/CurrentVersion/Explorer/Taskband'Private　Sub　textBox_KeyPress(ByVal　sender　As　Object,　ByVal　e　As　System.Windows.Forms.KeyPressEventArgs)'這個函數的功能是判斷按下的鍵是否為數字或者Backspace鍵If　(e.KeyChar　<　'0'　Or　e.KeyChar　>　'9')　Thene.Handled　=　TrueIf　Convert.ToInt32(e.KeyChar).Equals(8)　Thene.Handled　=　FalseEnd　IfElsee.Handled　=　FalseEnd　IfEnd　Sub　'KeyPress函數Private　Sub　txtBox_TextChanged(ByVal　txtBox　As　TextBox,　ByVal　trackBar　As　TrackBar)'TextBox里的值發生變化后'如果值不為空If　txtBox.Text　<>　''　Then'滑動條的值等于文本框內的數值TrytrackBar.Value　=　txtBox.TextIf　trackBar.Value　>　512　Then　'如果滑動條的值超過512則拋出一個異常Throw　New　ExceptionEnd　IfCatch　ex　As　ExceptiontrackBar.Value　=　512txtBox.Text　=　'512'End　TryEnd　If'如果值為空If　txtBox.Text　=　''　Then'滑動條的值置為0,文本框的值置為空trackBar.Value　=　0txtBox.Text　=　''End　IfEnd　Sub　'TextChanged函數Private　Sub　trackBar_ValueChanged(ByVal　txtBox　As　TextBox,　ByVal　tracBar　As　TrackBar)'當滑動條數值變化時,文本框里的數值始終和滑動條值相等txtBox.Text　=　tracBar.ValueEnd　Sub　'TrackBarValueChanged函數Private　Sub　btnApplySettings_Click(ByVal　sender　As　System.Object,　ByVal　e　As　System.EventArgs)　Handles　btnApplySettings.ClickMy.Computer.Registry.SetValue(path,　'MaxThumbSizePx',　Convert.ToInt32(maxSizeTrackBar.Value),　RegistryValueKind.DWord)My.Computer.Registry.SetValue(path,　'MinThumbSizePx',　Convert.ToInt32(miniSizeTrackBar.Value),　RegistryValueKind.DWord)My.Computer.Registry.SetValue(path,　'ThumbSpacingXPx',　Convert.ToInt32(xsTrackBar.Value),　RegistryValueKind.DWord)My.Computer.Registry.SetValue(path,　'ThumbSpacingYPx',　Convert.ToInt32(ysTrackBar.Value),　RegistryValueKind.DWord)My.Computer.Registry.SetValue(path,　'TopMarginPx',　Convert.ToInt32(tmTrackBar.Value),　RegistryValueKind.DWord)My.Computer.Registry.SetValue(path,　'BottomMarginPx',　Convert.ToInt32(bmTrackBar.Value),　RegistryValueKind.DWord)My.Computer.Registry.SetValue(path,　'LeftMarginPx',　Convert.ToInt32(lmTrackBar.Value),　RegistryValueKind.DWord)My.Computer.Registry.SetValue(path,　'RightMarginPx',　Convert.ToInt32(rmTrackBar.Value),　RegistryValueKind.DWord)My.Computer.Registry.SetValue('HKEY_CURRENT_USER/Software/Microsoft/Windows/CurrentVersion/Explorer/Advanced',　'ExtendedUIHoverTime',　Convert.ToInt32(dtTrackBar.Value),　RegistryValueKind.DWord)'修改注冊表后,重啟explore.exeDim　Explorers()　As　Process　=　Process.GetProcessesByName('explorer')For　Each　Explorer　As　Process　In　ExplorersExplorer.Kill()NextProcess.Start('explorer.exe')Explorers　=　NothingEnd　Sub#Region　'KeyPress_Events'Private　Sub　maxSizeTextBox_KeyPress(ByVal　sender　As　Object,　ByVal　e　As　System.Windows.Forms.KeyPressEventArgs)　Handles　maxSizeTextBox.KeyPresstextBox_KeyPress(maxSizeTextBox,　e)End　SubPrivate　Sub　miniSizeTextBox_KeyPress(ByVal　sender　As　System.Object,　ByVal　e　As　System.Windows.Forms.KeyPressEventArgs)　Handles　miniSizeTextBox.KeyPresstextBox_KeyPress(miniSizeTextBox,　e)End　SubPrivate　Sub　xsTextBox_KeyPress(ByVal　sender　As　System.Object,　ByVal　e　As　System.Windows.Forms.KeyPressEventArgs)　Handles　xsTextBox.KeyPresstextBox_KeyPress(xsTextBox,　e)End　SubPrivate　Sub　ysTextBox_KeyPress(ByVal　sender　As　System.Object,　ByVal　e　As　System.Windows.Forms.KeyPressEventArgs)　Handles　ysTextBox.KeyPresstextBox_KeyPress(ysTextBox,　e)End　SubPrivate　Sub　tmTextBox_KeyPress(ByVal　sender　As　System.Object,　ByVal　e　As　System.Windows.Forms.KeyPressEventArgs)　Handles　tmTextBox.KeyPresstextBox_KeyPress(tmTextBox,　e)End　SubPrivate　Sub　bmTextBox_KeyPress(ByVal　sender　As　System.Object,　ByVal　e　As　System.Windows.Forms.KeyPressEventArgs)　Handles　bmTextBox.KeyPresstextBox_KeyPress(bmTextBox,　e)End　SubPrivate　Sub　lmTextBox_KeyPress(ByVal　sender　As　System.Object,　ByVal　e　As　System.Windows.Forms.KeyPressEventArgs)　Handles　lmTextBox.KeyPresstextBox_KeyPress(lmTextBox,　e)End　SubPrivate　Sub　rmTextBox_KeyPress(ByVal　sender　As　System.Object,　ByVal　e　As　System.Windows.Forms.KeyPressEventArgs)　Handles　rmTextBox.KeyPresstextBox_KeyPress(rmTextBox,　e)End　SubPrivate　Sub　dtTextBox_KeyPress(ByVal　sender　As　System.Object,　ByVal　e　As　System.Windows.Forms.KeyPressEventArgs)　Handles　dtTextBox.KeyPresstextBox_KeyPress(dtTextBox,　e)End　Sub#End　Region#Region　'TextBox_Changed'Private　Sub　miniSizeTextBox_TextChanged(ByVal　sender　As　System.Object,　ByVal　e　As　System.EventArgs)　Handles　miniSizeTextBox.TextChangedtxtBox_TextChanged(miniSizeTextBox,　miniSizeTrackBar)End　SubPrivate　Sub　maxSizeTextBox_TextChanged(ByVal　sender　As　System.Object,　ByVal　e　As　System.EventArgs)　Handles　maxSizeTextBox.TextChangedtxtBox_TextChanged(maxSizeTextBox,　maxSizeTrackBar)End　SubPrivate　Sub　xsTextBox_TextChanged(ByVal　sender　As　System.Object,　ByVal　e　As　System.EventArgs)　Handles　xsTextBox.TextChangedtxtBox_TextChanged(xsTextBox,　xsTrackBar)End　SubPrivate　Sub　ysTextBox_TextChanged(ByVal　sender　As　System.Object,　ByVal　e　As　System.EventArgs)　Handles　ysTextBox.TextChangedtxtBox_TextChanged(ysTextBox,　ysTrackBar)End　SubPrivate　Sub　tmTextBox_TextChanged(ByVal　sender　As　System.Object,　ByVal　e　As　System.EventArgs)　Handles　tmTextBox.TextChangedtxtBox_TextChanged(tmTextBox,　tmTrackBar)End　SubPrivate　Sub　bmTextBox_TextChanged(ByVal　sender　As　System.Object,　ByVal　e　As　System.EventArgs)　Handles　bmTextBox.TextChangedtxtBox_TextChanged(bmTextBox,　bmTrackBar)End　SubPrivate　Sub　lmTextBox_TextChanged(ByVal　sender　As　System.Object,　ByVal　e　As　System.EventArgs)　Handles　lmTextBox.TextChangedtxtBox_TextChanged(lmTextBox,　lmTrackBar)End　SubPrivate　Sub　rmTextBox_TextChanged(ByVal　sender　As　System.Object,　ByVal　e　As　System.EventArgs)　Handles　rmTextBox.TextChangedtxtBox_TextChanged(rmTextBox,　rmTrackBar)End　SubPrivate　Sub　dtTextBox_TextChanged(ByVal　sender　As　System.Object,　ByVal　e　As　System.EventArgs)　Handles　dtTextBox.TextChangedIf　dtTextBox.Text　<>　''　Then'Delay　Time最大值是9999TrydtTrackBar.Value　=　dtTextBox.TextIf　dtTrackBar.Value　>　9999　ThenThrow　New　ExceptionEnd　IfCatch　ex　As　ExceptiondtTrackBar.Value　=　512dtTextBox.Text　=　'512'End　TryEnd　If'如果值為空If　dtTextBox.Text　=　''　ThendtTrackBar.Value　=　0dtTextBox.Text　=　''End　IfEnd　Sub#End　Region#Region　'TrackBar_Changed'Private　Sub　maxSizeTrackBar_ValueChanged(ByVal　sender　As　System.Object,　ByVal　e　As　System.EventArgs)　Handles　maxSizeTrackBar.ValueChangedtrackBar_ValueChanged(maxSizeTextBox,　maxSizeTrackBar)End　SubPrivate　Sub　miniSizeTrackBar_ValueChanged(ByVal　sender　As　System.Object,　ByVal　e　As　System.EventArgs)　Handles　miniSizeTrackBar.ValueChangedtrackBar_ValueChanged(miniSizeTextBox,　miniSizeTrackBar)End　SubPrivate　Sub　xsTrackBar_ValueChanged(ByVal　sender　As　System.Object,　ByVal　e　As　System.EventArgs)　Handles　xsTrackBar.ValueChangedtrackBar_ValueChanged(xsTextBox,　xsTrackBar)End　SubPrivate　Sub　ysTrackBar_ValueChanged(ByVal　sender　As　System.Object,　ByVal　e　As　System.EventArgs)　Handles　ysTrackBar.ValueChangedtrackBar_ValueChanged(ysTextBox,　ysTrackBar)End　SubPrivate　Sub　tmTrackBar_ValueChanged(ByVal　sender　As　System.Object,　ByVal　e　As　System.EventArgs)　Handles　tmTrackBar.ValueChangedtrackBar_ValueChanged(tmTextBox,　tmTrackBar)End　SubPrivate　Sub　bmTrackBar_ValueChanged(ByVal　sender　As　System.Object,　ByVal　e　As　System.EventArgs)　Handles　bmTrackBar.ValueChangedtrackBar_ValueChanged(bmTextBox,　bmTrackBar)End　SubPrivate　Sub　lmTrackBar_ValueChanged(ByVal　sender　As　System.Object,　ByVal　e　As　System.EventArgs)　Handles　lmTrackBar.ValueChangedtrackBar_ValueChanged(lmTextBox,　lmTrackBar)End　SubPrivate　Sub　rmTrackBar_ValueChanged(ByVal　sender　As　System.Object,　ByVal　e　As　System.EventArgs)　Handles　rmTrackBar.ValueChangedtrackBar_ValueChanged(rmTextBox,　rmTrackBar)End　SubPrivate　Sub　dtTrackBar_ValueChanged(ByVal　sender　As　System.Object,　ByVal　e　As　System.EventArgs)　Handles　dtTrackBar.ValueChangedtrackBar_ValueChanged(dtTextBox,　dtTrackBar)End　Sub#End　RegionPrivate　Sub　btnRestoreDefaults_Click(ByVal　sender　As　System.Object,　ByVal　e　As　System.EventArgs)　Handles　btnRestoreDefaults.ClickMy.Computer.Registry.SetValue(path,　'MaxThumbSizePx',　200,　RegistryValueKind.DWord)My.Computer.Registry.SetValue(path,　'MinThumbSizePx',　200,　RegistryValueKind.DWord)My.Computer.Registry.SetValue(path,　'ThumbSpacingXPx',　16,　RegistryValueKind.DWord)My.Computer.Registry.SetValue(path,　'ThumbSpacingYPx',　16,　RegistryValueKind.DWord)My.Computer.Registry.SetValue(path,　'TopMarginPx',　16,　RegistryValueKind.DWord)My.Computer.Registry.SetValue(path,　'BottomMarginPx',　16,　RegistryValueKind.DWord)My.Computer.Registry.SetValue(path,　'LeftMarginPx',　16,　RegistryValueKind.DWord)My.Computer.Registry.SetValue(path,　'RightMarginPx',　16,　RegistryValueKind.DWord)My.Computer.Registry.SetValue('HKEY_CURRENT_USER/Software/Microsoft/Windows/CurrentVersion/Explorer/Advanced',　'ExtendedUIHoverTime',　400,　RegistryValueKind.DWord)maxSizeTextBox.Text　=　'200'miniSizeTextBox.Text　=　'200'xsTextBox.Text　=　'16'ysTextBox.Text　=　'16'tmTextBox.Text　=　'16'bmTextBox.Text　=　'16'lmTextBox.Text　=　'16'rmTextBox.Text　=　'16'dtTextBox.Text　=　'400''修改注冊表后,重啟explore.exeDim　Explorers()　As　Process　=　Process.GetProcessesByName('explorer')For　Each　Explorer　As　Process　In　ExplorersExplorer.Kill()NextProcess.Start('explorer.exe')Explorers　=　NothingEnd　SubPrivate　Sub　mainForm_Load(ByVal　sender　As　System.Object,　ByVal　e　As　System.EventArgs)　Handles　MyBase.LoadmaxSizeTextBox.Text　=　'200'miniSizeTextBox.Text　=　'200'xsTextBox.Text　=　'16'ysTextBox.Text　=　'16'tmTextBox.Text　=　'16'bmTextBox.Text　=　'16'lmTextBox.Text　=　'16'rmTextBox.Text　=　'16'dtTextBox.Text　=　'400'On　Error　Resume　NextmaxSizeTextBox.Text　=　My.Computer.Registry.GetValue(path,　'MaxThumbSizePx',　Nothing).ToStringminiSizeTextBox.Text　=　My.Computer.Registry.GetValue(path,　'MinThumbSizePx',　Nothing).ToString()xsTextBox.Text　=　My.Computer.Registry.GetValue(path,　'ThumbSpacingXPx',　Nothing).ToString()ysTextBox.Text　=　My.Computer.Registry.GetValue(path,　'ThumbSpacingYPx',　Nothing).ToString()tmTextBox.Text　=　My.Computer.Registry.GetValue(path,　'TopMarginPx',　Nothing).ToString()bmTextBox.Text　=　My.Computer.Registry.GetValue(path,　'BottomMarginPx',　Nothing).ToString()lmTextBox.Text　=　My.Computer.Registry.GetValue(path,　'LeftMarginPx',　Nothing).ToString()rmTextBox.Text　=　My.Computer.Registry.GetValue(path,　'RightMarginPx',　Nothing).ToString()dtTextBox.Text　=　My.Computer.Registry.GetValue('HKEY_CURRENT_USER/Software/Microsoft/Windows/CurrentVersion/Explorer/Advanced',　'ExtendedUIHoverTime',　Nothing).ToStringEnd　SubEnd　Class

程序界面:

出處：http://www.cnblogs.com/technology/

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