AIR中获取程序当前目录之shu特别篇
一般情况下，获取程序当前目录是很简单的，不过如果用shu打包后的AIR程序用常规方法是无法获取的，获取到的也是程序的执行的时候临时解压的目录，与我们想要的结果相差甚远。
经过查阅资料发现，可以使用shu.System.Paths.app来获取，非常准确方便。
要知道,shu的功能，是没法调试的，只有打包看结果了哦。
shu:是一个非常优秀的工具。
http://shu-player.com
Command List
In order for these functions to be available, you need to include the Shu.swc in your AIR project.
Instructions can be found here.
Executing other applications
shu.System.exec(filename:String, showGui:Boolean=false):Number show
Overview:
Executes an external application and waits for it to exit.
Parameters:
filename – String specifing path to an application to execute.
showGui – Boolean specifing whether to display the application’s GUI.
showGui – Boolean specifing whether to display the application’s GUI.
Returns:
The exit code of the program launched.
shu.System.execAsync(filename:String, showGui:Boolean=false):Number show
Overview:
Executes an external application asynchronously. The return value is the application process ID which can be used to check if the application is still running by calling shu.System.isRunning.
Parameters:
filename – String specifing path to an application to execute.
showGui – Boolean specifing whether to display the application’s GUI.
showGui – Boolean specifing whether to display the application’s GUI.
Returns:
The process ID of the launched application.
shu.System.isRunning(pid:Number):Boolean show
Overview:
Determine if the application specified by process ID is still running.
Parameters:
pid – The process ID to check.
Returns:
A boolean value of true indicates the application is still running, false otherwise.
shu.System.launchFile(filename:String):Boolean show
Overview:
Opens a file in the systems default assigned application.
Parameters:
filename – The file to open.
Returns:
A boolean value of true to indicate the file was opened, false otherwise.
shu.System.lastOutput:String show
Overview:
This property has the output of the last executed application (either executed via shu.System.exec or shu.System.execAsync).
Returns:
A string of the last executed applications output.
Database access
shu.MySQL.connect(host:String, port:Number, user:String, pass:String, dbName:String):Boolean show
Overview:
Connect to a MySQL database.
Parameters:
host – The URL to connect to.
port – The port number the MySQL database is running on.
user – The username to use when connecting.
pass – The password to use when connecting.
dbName – The database to use.
port – The port number the MySQL database is running on.
user – The username to use when connecting.
pass – The password to use when connecting.
dbName – The database to use.
Returns:
A boolean value of true if succesfuly connected, false otherwise.
shu.MySQL.disconnect():void show
Overview:
Disconnect the MySQL database.
shu.MySQL.runQuery(query:String):Boolean show
Overview:
Run a query on the connected MySQL database.
Parameters:
query – A string of the query.
Returns:
A boolean value of true if the query executed succesfuly.
shu.MySQL.fetchRow():Array show
Overview:
Fetch the next row of a resultset from the last query. This can be called repeatidly to get all the results.
Returns:
An array of the row. Each element is a string.
shu.MySQL.seekRow(which:Number):Boolean show
Overview:
Seek to a specific row in the last resultset.
Parameters:
which – The row index, zero based.
Returns:
A value of true if the row was moved to, otherwise false.
shu.MySQL.rowCount:Number show
Overview:
This property has the number of rows in the last resultset.
Returns:
A number indicating the number of rows.
shu.MySQL.lastError:String; show
Overview:
This has the last error message encountered. This can be useful in diagnosing unexpected results.
Returns:
A string of the last error message.
Prompts and message boxes
shu.Dialogs.messageBox(message:String, caption:String, style:Number):Number show
Overview:
Displays a modal system messagebox.
Parameters:
message – The message to display.
caption (optional) – The caption to display in the title bar of the messagebox.
style (optional) – The buttons and icons to show. This is constructed by OR’ing the style properties :
caption (optional) – The caption to display in the title bar of the messagebox.
style (optional) – The buttons and icons to show. This is constructed by OR’ing the style properties :
- shu.Dialogs.MB_OK
- shu.Dialogs.MB_CANCEL
- shu.Dialogs.MB_YES_NO
- shu.Dialogs.MB_ICON_ERROR
- shu.Dialogs.MB_ICON_INFORMATION
- shu.Dialogs.MB_ICON_QUESTION
- shu.Dialogs.MB_ICON_EXCLAMATION
Returns:
The numerical ID of the button clicked. It will be one of:
- shu.Dialogs.MB_OK
- shu.Dialogs.MB_CANCEL
- shu.Dialogs.MB_YES
- shu.Dialogs.MB_NO
shu.Dialogs.inputBox(message:String, caption:String, defaultValue:String):String show
Overview:
Displays a system input box dialog. The user enters a one line string and presses OK.
Parameters:
message – The message above the input textfield.
caption (optional) – The text to appear in the titlebar of the dialog.
defaultValue (optional) – An initial string of text to appear in the input textfield.
caption (optional) – The text to appear in the titlebar of the dialog.
defaultValue (optional) – An initial string of text to appear in the input textfield.
Returns:
The string of text the user entered.
Paths
These properties give you some common file system paths. Note they are all read-only.
shu.Paths.app:String show
Returns:
A string specifing the location the application resides at.
shu.Paths.desktop:String show
Returns:
A string specifing the location the users desktop.
shu.Paths.documents:String show
Returns:
A string specifing the location the users default documents directory.
shu.Paths.temp:String show
Returns:
A string specifing the location the systems temporary directory.
Screen
shu.Screen.capture(filename:String,left:Number,top:Number,right:Number,botton:Number):Boolean show
Overview:
Capture an image of the screen (or part of the screen) to a file.
Note that this function either takes just the first parameter or all parameters. If only the filename is supplied, the whole screen is captured. Otherwise the area specified by left, top, right and bottom is captured. The file to save to can be either a png, jpg, tiff or bmp and will be determined by the filenames extension.
Note that this function either takes just the first parameter or all parameters. If only the filename is supplied, the whole screen is captured. Otherwise the area specified by left, top, right and bottom is captured. The file to save to can be either a png, jpg, tiff or bmp and will be determined by the filenames extension.
Parameters:
filename – A string specifing the path to save the file to.
left (optional) – The leftmost position to capture.
top (optional) – The topmost position to capture.
right (optional) – The rightmost position to capture.
bottom (optional) – The bottom-most position to capture.
left (optional) – The leftmost position to capture.
top (optional) – The topmost position to capture.
right (optional) – The rightmost position to capture.
bottom (optional) – The bottom-most position to capture.
Returns:
A boolean value of true if the file was saved successfully, false otherwise.
Extend via custom DLL/dylib
N.B. The DLL/dylib must be an shu extension (eg it must implement the extapi)
shu.Extension.call(handlerName, …):* show
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