Send keyboard keys in c# [modified] - C# Discussion Boards

Dewald2-Dec-09 23:53

Dewald

2-Dec-09 23:53

I think you may be right about VS trying to help in a very MS behind the scene kind of way Smile | :)

, because I definitely did not copy the PDB.

Not too worry, I think this obfuscator did the trick (mostly).

Thanks for the help.

Rob Philpott2-Dec-09 23:12

Rob Philpott

2-Dec-09 23:12

Debug vs. Release is not as clear cut in the .NET world as it was in something like C++. You can still debug release stuff.

What I *think* is probably happening is that you've still got a PDB file despite building in release. This is the file that tells the debugger how to map instructions to lines of source code. If you don't distribute that, then they shouldn't be able to step in the debugger. Also, they'd have to have the source code anyway which they won't.

It's by virtue of the fact you have both source and PDB on your machine you can do it, so no, they won't be able to step through it.

As other's have mentioned, it's very straight forward to reverse engineer .NET with something like Reflector. You can obfuscate it, but that's not that effective. Really, if you need to protect some Intellectual Property you'd need to use something other than .NET, or maybe managed/unmanaged C++. But, ultimately, anything can be reverse engineered.

Regards,
Rob Philpott.

Rajesh R Subramanian2-Dec-09 23:40

Rajesh R Subramanian

2-Dec-09 23:40

Rob Philpott wrote:
Debug vs. Release is not as clear cut in the .NET world as it was in something like C++.

I'm giving a 5 for that. Smile | :)

“Follow your bliss.” – Joseph Campbell

Dewald2-Dec-09 23:44

Dewald

2-Dec-09 23:44

This is all very interesting, thanks. I am perplexed though because I know for a fact that my test app and my dll are in separate solutions in separate folders. I definitely did compile the dll in release config and, while the compiler did create a .pdb file (in the release directory) I only copied the .dll file into my test app's folder.

At any rate, I fiddled around with Dotfuscator a bit and I seem to have gotten to a point where the .dll is ugly enough to at least dissuade the average programmer from decompiling it and at least I can't step into the code in debug mode anymore.

all in one audio video player ( Flash movies,MP3,MP4,AVI,JPG,WMA etc)

PIEBALDconsult3-Dec-09 4:45

PIEBALDconsult

3-Dec-09 4:45

I find that when I reference a DLL that's been built in release mode while debugging, Visual Studio pops up a message saying it can't be debugged and asks if I want to continue. So I haven't seen the situation you describe.

But I also delete the PDB files, so maybe that helps.

ShaktisinhRathod2-Dec-09 21:26

ShaktisinhRathod

2-Dec-09 21:26

PLAYER WHICH PLAYS ALL audio and video FILES LIKE
FLASH MOVIE,MP3,MP4,AVI,JPG,WMA
i have created one but doesnt support flash files using c#.net 2.0
actually i need to create "Youtube" like windows based application.
Thanking you

Re: all in one audio video player ( Flash movies,MP3,MP4,AVI,JPG,WMA etc)

Saksida Bojan2-Dec-09 22:07

Send keyboard keys in c# [modified]

2-Dec-09 22:07

You have quite high. VLC player is one of such players, that has a lot of decoders included.

SWF File Specification[^]

Or if you want to do it quicly, you could search adobe site or search this site for articles:
Fun with C# and the Flash Player 8 External API[^]

krinaljariwala2-Dec-09 20:36

krinaljariwala

2-Dec-09 20:36

Hello,
I want to send some text or keys to other applications say "notepad,calc,etc.". I have tried but i failed. New window is opened but key is not displayed on the window.
Here is my code:

[DllImport("User32.DLL")]
public static extern bool SetForegroundWindow(IntPtr hwnd);
[DllImport("User32.DLL")]
public static extern int SetActiveWindow(IntPtr hwnd);

    newprocess.StartInfo.FileName = "calc.exe";
    newprocess.StartInfo.UseShellExecute = false;
    newprocess.StartInfo.RedirectStandardOutput = true;
    newprocess.StartInfo.RedirectStandardInput = true;
    newprocess.Start();
    SetActiveWindow(newprocess.MainWindowHandle);
    //SetForegroundWindow(newprocess.MainWindowHandle);

    //write to calc
    // Press the 1 key
    keybd_event(0x61, 0x45, KEYEVENTF_EXTENDEDKEY, 0);
    //Release the 1 key
    keybd_event(0x61, 0x45, KEYEVENTF_EXTENDEDKEY | KEYEVENTF_KEYUP, 0);

    //// Press the + key
    keybd_event(0x6B, 0x45, KEYEVENTF_EXTENDEDKEY, 0);
    ////Release the + key
    keybd_event(0x6B, 0x45, KEYEVENTF_EXTENDEDKEY | KEYEVENTF_KEYUP, 0);

    //// Press the 1 key
    keybd_event(0x61, 0x45, KEYEVENTF_EXTENDEDKEY, 0);
    ////Release the 1 key
    keybd_event(0x61, 0x45, KEYEVENTF_EXTENDEDKEY | KEYEVENTF_KEYUP, 0);

I have tried with many functions like SetForegroundWindow(), but there is no change. I have tried with notepad and used Sendkeys.Sendwait(), and its working fine. But help me for keybd_event().
Please help me its urgent.
Thank you in advance.

modified on Thursday, December 3, 2009 4:34 AM

Re: Send keyboard keys in c#

Rob Philpott2-Dec-09 23:20

Rob Philpott

2-Dec-09 23:20

What's keybd_event?

Not entirely sure how easy this is to do these days, as a protected operating system should to some extent stop processes interfering with each other.

What you probably want to do is call SendMessage on the window passing in keyboard messages. Wouldn't like to say whether that will work or not.

Regards,
Rob Philpott.

Re: Send keyboard keys in c#

krinaljariwala2-Dec-09 23:39

krinaljariwala

2-Dec-09 23:39

Thank you for your reply,
Keybd_event() is working fine for opening start menu and search files. But when i open any new application with process class its not working. I think focus is not done in newly created process window and keyboard focus is also not there. But i have setfocus() for keyboard focus and still its not working.
Please help me.
Thank you in advance.

DDay.iCal question

Jamie Nordmeyer2-Dec-09 18:13

Jamie Nordmeyer

2-Dec-09 18:13

I don't know if anyone on here has used the DDay.iCal library to create iCal files, but I thought I'd throw this out anyway, and see what I get. I've posted the same question just now on their forum as well. Basically, I'm trying to create an iCal file that includes reminders; in other words, when I open the item in Outlook, the appointment has, say, 1 Day as the reminder setting. I just can't seem to get it to work, though. The appointment looks good, except for this one facet. Here's the relevant code:

Alarm alarm = new Alarm();
alarm.Action = AlarmAction.Display;
alarm.Description = "Reminder";
alarm.Trigger = new Trigger(TimeSpan.FromDays(-1));
evt.AddAlarm(alarm);

Any ideas? Thanks in advance. If the DDay forum gets back to me, I'll post their response here for anyone else to view.

Jamie Nordmeyer
Portland, Oregon, USA
http://www.feralcodemonkies.com

About charcter code pages

bhaskarsgb2-Dec-09 17:38

2-Dec-09 17:38

Hello all,

I have one problem in my module. in my project we are using the charcaters ASCII 32 to 255. we are display the character based on value i.e., if we want display Ö char just convert the 153 to charcater (char x = (char)153). But one of my coustmer wants if he enter the character by pressing Alt + 153 that will also we have to display. Now we are facing the problem Alt + 153 charcter is giving 214 value.we are not the proper value for that charcter. like this from 128 to 255 character we are facing the problem. can any one suggest some solution? it is very helpfull to me.

thanks in advance
Bhaskar

Saksida Bojan2-Dec-09 21:36

2-Dec-09 21:36

That is realy odd. "Ö" that is the char when i press ALT + 153. "Í" that is the char with ALT+214. Have you tried using Encoding.ASCII?
Also windows have Character map app. Some characters show on it with alt combination.

bhaskarsgb2-Dec-09 22:13

2-Dec-09 22:13

Thanks For ur reply,

If u try to debug the code.

char ch1 = (char)153;
char ch2 = 'Ö'; // alt + 153;

in this case ch1 value will be 153 and ch2 value will be 214.

Saksida Bojan2-Dec-09 23:44

2-Dec-09 23:44

Alt Codes[^]

Acording to that page, those codes are not ASCII or unicode. But rather ANSI or old MS-Dos code page based. if the numbers doesn't have zero in front of "Alt+153" uses MS-Dos code pages.

System.Text.Encoding.GetEncoding(850).GetChars(new Byte[]{153})[0]

That code uses code page: 850. That is "Multilingual (Latin-1)" (Western European languages) (Copied from wiki, link below)

List of Code pages[^]

bhaskarsgb3-Dec-09 0:49

Re: About charcter code pages [modified]

3-Dec-09 0:49

char x1 = (char)153;
char x2 = 'Ö';
byte ss1 = System.Text.Encoding.GetEncoding(850).GetBytes(new char[] { x1 })[0]; // result 63
byte ss1 = System.Text.Encoding.GetEncoding(850).GetBytes(new char[] { x2 })[0]; // result 63

this is not working.
i want the value 153 if i use the character (char)153 and alt+153.

Saksida Bojan3-Dec-09 0:53

3-Dec-09 0:53

edit:

It isn't:
.GetEncoding(850).GetBytes
It shoud be:
.GetEncoding(850).GetChars

char x1 = (char)153;
char x2 = 'Ö';
char ss1 = System.Text.Encoding.GetEncoding(850).GetChars(new byte[] { Convert.ToByte(x1) })[0]; //x1=153 result 214="Ö": ANSI code
byte b1 = System.Text.Encoding.GetEncoding(850).GetBytes(new char[] { x2 })[0]; // x2=214 result 153 Code-Page code

Edit: I have tried your second code, second ss1, it shoud work. Try code-page 437 instead 850.

bhaskarsgb wrote:
i want the value 153 if i use the character (char)153 and alt+153.

Are you askinng the folowing: User Press ALT+153 and you want same character with a character code: 153?

modified on Thursday, December 3, 2009 7:24 AM

bhaskarsgb3-Dec-09 7:01

3-Dec-09 7:01

yes i am asking that one if user enter the charcter by using Alt+153 or (char)153 convertion also i want the same value 153.

i think it is little bit confusion. in my module i have symbol editor it contains the character from 32 to 255. if user want the value on the symbol editor he just double click on the value(if user wants "Ö" user will double click on the charcter. in this case i am getting the position of the character in that editor. the position is 153) user can use this symbol editor or he can use directly by pressing the Alt+ value.

in my code i am just coverting the charcter what i am having in the symbol editor text box. this is the actual problem i am facing.

thanks in advance
bhaskar

Saksida Bojan3-Dec-09 20:38

3-Dec-09 20:38

That is gonna be hard but i think I found info:

// Set two ecodings for convert
Encoding unicode = Encoding.Unicode;
Encoding CodePage850 = Encoding.GetEncoding(850);

// Test character
// Alt+153 with 214 char code on unicode
char c1 = (char)'Ö';
// Convert 214 from Char to array.
byte[] ub1 = Encoding.Unicode.GetBytes(new char[] {c1});

// convert char code 214 from unicode to CodePage850, with a char code 153.
byte[] ub2 = Encoding.Convert(unicode, CodePage850, ub1);

More info here[^][^]

bhaskarsgb4-Dec-09 7:01

4-Dec-09 7:01

still that example is giving 214 only. but i want 153 at any case.

Saksida Bojan4-Dec-09 8:36

4-Dec-09 8:36

Thats of. Did you tried updating .net framework or using diffrent version?

My Picture[^]
Do you have same output as i have from my picture? (Look at local Watch)

bhaskarsgb4-Dec-09 21:47

4-Dec-09 21:47

Encoding unicode = Encoding.Unicode;
Encoding CodePage850 = Encoding.GetEncoding(850);

// Test character

char c1 = (char)153;
// Convert 153 from Char to array.
byte[] ub1 = Encoding.Unicode.GetBytes(new char[] {c1});

// convert char code 214 from unicode to CodePage850, with a char code 153.
byte[] ub2 = Encoding.Convert(unicode, CodePage850, ub1);

If use char c1 = (char)153;

this case ub2[0] is 63. that is the problem i am facing.

Saksida Bojan4-Dec-09 21:58

4-Dec-09 21:58

It seems on my Side it behaves differently than on your side. I am using Visual Studio 2008. My default project uses .NET framework 3.5. I have both Visual Studio 2008 and .Net Framework 3.5 upgraded to SP1.

What version of Visual Studio or other IDE you are using? Witch .NET framework are you using and is it upgraded (dotNET 3.5 SP1 or dotNET 2.0 SP2)?

If you have fully upgraded .NET Framework, I Suggest your project to use different version of .NET framework

Luc Pattyn3-Dec-09 1:06

Luc Pattyn

3-Dec-09 1:06

bhaskarsgb wrote:
we are using the charcaters ASCII 32 to 255

impossible. ASCII is a 7-bit code, it goes up to 127.
You probably mean ANSI characters, those are 8-bit; chose the right code page, in Western Europe it probably is 1252.

Smile | :)

Luc Pattyn [Forum Guidelines] [Why QA sucks] [My Articles]

I only read code that is properly indented, and rendered in a non-proportional font; hint: use PRE tags in forum messages

bhaskarsgb4-Dec-09 7:04