@jcddcjjcd - C# youse of the dll

[SueImWeb]

Hello,

first of all I want to say THANK YOU for your very helpful article!

Would you please additionally help me understanding some parameters?

//AU3_API void WINAPI AU3_ControlGetHandle(const char *szTitle, /*[in,defaultvalue("")]*/const char *szText
//, const char *szControl, char *szRetText, int nBufSize);
[DllImport("AutoItX3.dll", SetLastError = true, CharSet = CharSet.Auto)]
static public extern void AU3_ControlGetHandle([MarshalAs(UnmanagedType.LPStr)] string Title
, [MarshalAs(UnmanagedType.LPStr)] string Text, [MarshalAs(UnmanagedType.LPStr)] string Control
, byte[] RetText, int BufSize);

Using the registered version I do only need 3 parameters, the dll expects 5.

What do I have to put in for byte[] RetText and int BufSize ?

Greetings from Germany

Sue

Ups.....sorry for mistyping the word use in the headline....

Edited October 17, 2008 by SueImWeb

[jcddcjjcd]

Sue.

Try this:

string Title = "WhateverWorks";

string Text = "WhateverWorks";

string TheControlID = "TheControlID";

byte[] RetText = new byte[50]; //a number big enought to hold result, trailing bytes will be 0

AutoItX3Declarations.AU3_ControlGetHandle(Title, Text, TheControlID, RetText, RetText.Length);

//may need to convert back to a string or int

string TheControlIDasString = System.Text.Encoding.ASCII.GetString(RetText).TrimEnd('\0');

Regards,

John.

[jcddcjjcd]

I just tested the above and it works.

Open up Notepad and then add a button to your application thus:

private void btnTest_Click(object sender, EventArgs e)

{

string Title = "Untitled - Notepad";

string Text = "";

string TheControlID = "Edit1";

byte[] RetText = new byte[50]; //a number big enought to hold result, trailing bytes will be 0

AutoItX3Declarations.AU3_ControlGetHandle(Title, Text, TheControlID, RetText, RetText.Length);

//may need to convert back to a string or int

string TheControlIDasString = System.Text.Encoding.ASCII.GetString(RetText).TrimEnd('\0');

MessageBox.Show(TheControlIDasString);

}

Regards,

John.

[SueImWeb]

Thank you very much, it works.

But unfortunately I have the same problem as with using the registered version of AutoItX.

The method returns an empty string instead of the control's handle.

If I only knew what's the reason....

Until a few days ago everything worked without any problem.

Regards

Sue

Edited October 19, 2008 by SueImWeb

[jcddcjjcd]

Sue.

Use the AU3Info.exe tool on your target to get some ideas as to what to put in the first two fields. It can take quite a bit of trial and error to get values that work consistantly and it varies according to the control. Some controls are strangely implemented and won't yeild at all.

Good luck.

Regards,

John.