B4J Question Is it possible to get all windows' title which is opened by users ?

[liulifeng77]

I'm using JAutoItx.jar, but I don't know the title of window(because opening different ppt file or different version of powerpoint, the title of window will be different), so I want to get all window's title, and check the "key" word(powerpoint).any suggestion will be appreciated! thanks!

 

[Erel]

Download jna: https://www.b4x.com/android/forum/threads/get-ms-dos-path.84474/#post-535285

code:

#AdditionalJar: jna-4.5.0
#AdditionalJar: jna-platform-4.5.0

Sub Process_Globals
   Private titles As List
   Private user32 As JavaObject
End Sub


Sub GetAllWindowsTitles As List
   titles.Initialize
   user32 = user32.InitializeStatic("com.sun.jna.platform.win32.User32").GetField("INSTANCE")
   Dim callback As Object = user32.CreateEvent("com.sun.jna.platform.win32.WinUser.WNDENUMPROC", "callback", "")
   user32.RunMethod("EnumWindows", Array(callback, Null))
   Return titles
End Sub

Sub Callback_Event (MethodName As String, Args() As Object) As Object
   If MethodName = "hashCode" Then Return 0
   If MethodName = "toString" Then Return ""
   If MethodName = "equals" Then Return False
   If MethodName = "callback" Then
       Dim title(512) As Char
       user32.RunMethod("GetWindowText", Array(Args(0), title, 512))
       Dim native As JavaObject
       Dim text As String = native.InitializeStatic("com.sun.jna.Native").RunMethod("toString", Array(title))
       text = text.Trim
       If text.Length > 0 Then titles.Add(text)
   End If
   Return True
End Sub

Note that it will only work properly in release mode. If you want to use it in debug mode then you should add it to a class and compile it to a library.

 

[liulifeng77]

thank you Erel, I found that if run sub GetAllWindowsTitles 2 times or more times, it will show error message:TextMessage Error: (RuntimeException) java.lang.RuntimeException: Method: GetWindowText not matched.
can you give me some suggestion?
regards

 

[Erel]

I've updated the code with a fix.

 

[liulifeng77]

ok，thanks。

 

[jroriz]

Download jna: https://www.b4x.com/android/forum/threads/get-ms-dos-path.84474/#post-535285

code:

#AdditionalJar: jna-4.5.0
#AdditionalJar: jna-platform-4.5.0

Sub Process_Globals
   Private titles As List
   Private user32 As JavaObject
End Sub


Sub GetAllWindowsTitles As List
   titles.Initialize
   user32 = user32.InitializeStatic("com.sun.jna.platform.win32.User32").GetField("INSTANCE")
   Dim callback As Object = user32.CreateEvent("com.sun.jna.platform.win32.WinUser.WNDENUMPROC", "callback", "")
   user32.RunMethod("EnumWindows", Array(callback, Null))
   Return titles
End Sub

Sub Callback_Event (MethodName As String, Args() As Object) As Object
   If MethodName = "hashCode" Then Return 0
   If MethodName = "toString" Then Return ""
   If MethodName = "equals" Then Return False
   If MethodName = "callback" Then
       Dim title(512) As Char
       user32.RunMethod("GetWindowText", Array(Args(0), title, 512))
       Dim native As JavaObject
       Dim text As String = native.InitializeStatic("com.sun.jna.Native").RunMethod("toString", Array(title))
       text = text.Trim
       If text.Length > 0 Then titles.Add(text)
   End If
   Return True
End Sub

Note that it will only work properly in release mode. If you want to use it in debug mode then you should add it to a class and compile it to a library.

Hi. I need to upgrade this sample and get the window size and position.
Any help?

 

[DonManfred]

Hi. I need to upgrade this sample and get the window size and position.

https://github.com/java-native-acce...rm/src/com/sun/jna/platform/win32/User32.java
Maybe

* This function retrieves the dimensions of the bounding rectangle of the
* specified window. The dimensions are given in screen coordinates that are
* relative to the upper-left corner of the screen.
*
* @param hWnd
* Handle to the window.
* @param rect
* Long pointer to a RECT structure that receives the screen
* coordinates of the upper-left and lower-right corners of the
* window.
* @return If the function succeeds, the return value is nonzero. If the
* function fails, the return value is zero.
*/
boolean GetWindowRect(HWND hWnd, RECT rect);
/**

 

[jroriz]

https://github.com/java-native-acce...rm/src/com/sun/jna/platform/win32/User32.java
Maybe

I didn't find anything related to how to get the window size and position.

 

[DonManfred]

I didn't find anything related to how to get the window size and position.

GetWindowRect gets the rect of the window on your Desktop.
You have lower left and upper right position.
From this you can calculate top left and height. And also the position

 

[jroriz]

GetWindowRect gets the rect of the window on your Desktop.
You have lower left and upper right position.
From this you can calculate top left and height. And also the position

Could you help me with a code sample? I dont know how to acomplish this...

 

[DonManfred]

I don´t know too, sorry. You need to figure out. Learn it ;-)

 

[Erel]

Hi. I need to upgrade this sample and get the window size and position.

Please start a new thread for this.