C# Discussion Boards - CodeProject

mav.northwind30-Oct-07 19:59

30-Oct-07 19:59

Hi!

I guess you've created a setup and deployment project to install your application and are starting the program using a shortcut created there, right?
In this case, Windows Installer checks if all the key files in your installation are still there and if not tries to reinstall them.
I can't describe it in all details but this should get you started.

Regards,
mav

--
Black holes are the places where God divided by 0...

SendInput

danzar30-Oct-07 14:16

danzar

30-Oct-07 14:16

Hi, I was woundering if some of the higher level C# programmers could help me with my code. I have read all the Doc. that i can find about it, But i still cant get it to fully work. If I comment out the keyboadx ref's the mouseclickx works fine. If I dont neather the mouseclickx nor the keyboardx works at all. I cant get the keyboardx to work in any fashion.

I made a link to a paste it site because i didnt know how it it is looked at about paste long code in forums.

http://rafb.net/p/bmuAVm81.html[^]

Re: SendInput

Luc Pattyn30-Oct-07 15:36

Luc Pattyn

30-Oct-07 15:36

Hi,

the problem is with your INPUT struct; its original C definition has a union which
puts MOUSEINPUT and KEYBDINPUT at the same location; yours has not, so the substructs
are located sequentially.

There is a way to mimic union behavior in C# using explicit offsets, but in this case
it would be easier to come up with two different INPUT structs (say INPUTK and INPUTM),
and two prototypes for SendInput accordingly.

Smile | :)

Luc Pattyn [Forum Guidelines] [My Articles]

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Re: SendInput

Anthony Mushrow30-Oct-07 16:18

Anthony Mushrow

30-Oct-07 16:18

And as usual, Luc has the answer.

I wouldn't even have thought of checking the original structs.

My current favourite word is: Waffle

Cheese is still good though.

Re: SendInput

Luc Pattyn30-Oct-07 23:54

Luc Pattyn

30-Oct-07 23:54

when it fails no part is beyond suspicion...

Luc Pattyn [Forum Guidelines] [My Articles]

this months tips:
- use PRE tags to preserve formatting when showing multi-line code snippets
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Re: SendInput

danzar1-Nov-07 13:55

danzar

1-Nov-07 13:55

Thank you for the reply. I have modifed my code serveral time to try to make the struct more like you said. but to no avail can i get it to work. this is the code I have this time.

Let me know what you see wrong on this one..

Thank you very much
Danzar

http://rafb.net/p/uPx4EW73.html[^]

Re: SendInput

Luc Pattyn1-Nov-07 18:01

Luc Pattyn

1-Nov-07 18:01

Hi danzar,

the way I read the documentation on KEYBDINPUT structure, you must specify a valid
dwExtraInfo
"Specifies an additional value associated with the keystroke. Use the GetMessageExtraInfo function to obtain this information"

so I think your zero value is not good enough.

BTW: I noticed the mouse struct is smaller than the keyboard struct, but the original INPUT
has a union, so its size must accomodate the largest of them (once you try my INPUTM, it
would fail if you don't take care of that!).

Smile | :)

Luc Pattyn [Forum Guidelines] [My Articles]

this months tips:
- use PRE tags to preserve formatting when showing multi-line code snippets
- before you ask a question here, search CodeProject, then Google

Generic event procedure for mutiple controls.

amatbrewer30-Oct-07 12:19

amatbrewer

30-Oct-07 12:19

I want to be able to create generic event procedures that can be used for a number of controls (the same type) on a form.
For example (assume the object sender would always be a text box);

private void tbCallBlockPct_Click(object sender, EventArgs e)<br />
{<br />
    sender.SelectAll();<br />
}

However when I try somehting like this I get a syntax error that the “object sender does not contain a definition for SelectAll”.
If the function is being passed a textbox as the variable sender should not all of its methods and properties be accessable?

David Wilkes

Re: Generic event procedure for mutiple controls.

pmarfleet30-Oct-07 12:41

pmarfleet

30-Oct-07 12:41

sender is of type object, which doesn't have a SelectAll() method in its interface. You should cast sender to an object variable of type TextBox in order to invoke properties/methods particular to this class.

TextBox tb = (TextBox)sender;
tb.SelectAll();

Paul Marfleet

Re: Generic event procedure for mutiple controls.

amatbrewer30-Oct-07 15:26

amatbrewer

30-Oct-07 15:26

Thanks.
That is alomost exactly what I ended comming up with not too long after posting the message. It seemed a bit round about and redundant, so i was not sure about it.
Would it be correct to assume that since the tb.SelectAll works (selects the text in the original control) means that the tb is a pointer to the actual text box and not a copy of it?
It would seem that you should be able to do it more directly, like (TextBox)sender.SelectAll(); or something similar.

David Wilkes

Re: Generic event procedure for mutiple controls.

Stefan Troschuetz30-Oct-07 21:24

Stefan Troschuetz

30-Oct-07 21:24

amatbrewer wrote:
Would it be correct to assume that since the tb.SelectAll works (selects the text in the original control) means that the tb is a pointer to the actual text box and not a copy of it?

Yes.

amatbrewer wrote:
It would seem that you should be able to do it more directly, like (TextBox)sender.SelectAll(); or something similar.

Try this one: ((TextBox) sender).SelectAll();

"Programming today is a race between software engineers striving to build bigger and better idiot-proof programs, and the Universe trying to produce bigger and better idiots. So far, the Universe is winning." - Rick Cook

www.troschuetz.de

Re: Generic event procedure for mutiple controls.

Phil J Pearson31-Oct-07 3:43

Phil J Pearson

31-Oct-07 3:43

It would be safer not to assume that the sender is a TextBox (one day it won't be). Code like this:

TextBox tb = sender as TextBox;
if (tb != null)
  {
  tb.SelectAll();
  }
else
  {
  // handle the error. Maybe just assert - it's a programming error
  }

Phil

The opinions expressed in this post are not necessarily those of the author, especially if you find them impolite, inaccurate or inflammatory.

looking for good or better data structure

stephan_00730-Oct-07 10:47

stephan_007

30-Oct-07 10:47

hy everyone!

i do already have an idea for this but i thought, maybe there is a better solution than mine (easier, more stable etc.) so that's why i ask:

i do have datafields with one line containing the fielddescription and the second line containing the values. now i do want to store these info so i am able to use it later on.

my idea would be to store it in arrays, one for every dataset. one array field is the fielddescription (FD) and the second one is the value to this description field (VF).

so it would look like this

---------------------------
| 1 | 2 | ....
.....................
|FD1 |VF1 |FD1 |VF1 |
.....................
|FD2 |VF2 |FD2 |VF2 |
.....................
|... |... ||... |... |
......................
|FDn |VFn ||FDn |VFn |
......................

i chose this way because i do want to allow reordering of the "fields" (e.g. datafield11 and datafield22 change places) or there is a new field append to the old ones (lets say a n+1 field).

what way would you define this structure (i would define a two dimensional array, where the second array contains another two dimensional array)?
or do you have a better idea of how to store this info in a datastructure?

the infos in my txtfile i do parse look like this (this are two pairs of info!)

name1, name2, name3, name4, ...
value1, value2, valure3, value4, ...
name1, name2, name3, name4, ...
value1, value2, valure3, value4, ...

where the first pair is the first element in my arraystructure, the second one is the second arrayelement etc.

i do know how many lines they are. because of the structure i am able to count how many pairs are available. so i know the dimension of the datastructure which i do have to provide (with dynamic arrays this is quit easy to do).

but from my point of view my structure looks a little strange, because if you want to access the first value of the first element then you have to do the following

access the first dataelement in the array and then enter the second array to get the required data.
eg.
datalement[1,[2]]

(not correct coded i guess, but you might get the meaning of it.

so my question is: how would you define a datastructure to store the info

// pair 1<br />
name1, name2, name3, name4, ...<br />
value 1, value 2, valure3, value4, ...<br />
//pair 2<br />
name 1, name2, name3, name4, ...<br />
value 1, value2, valure3, value4, ...<br />
....<br />
//pair n-1<br />
name1, name2, name3, name4, ...<br />
value1, value2, valure3, value4, ...<br />
//pair n<br />
name1, name2, name3, name4, ...<br />
value1, value2, valure3, value4, ...<br />

so any idea how to store this info in a more simpley way is welcome.

thanks!
stephan.

Re: looking for good or better data structure

stephan_00730-Oct-07 21:07

stephan_007

30-Oct-07 21:07

i found a better or easier solution to my problem.

i do not use array in array anymore i decided to use an extra array to store the infos where the data is located in. so my new structure looks like that

<br />
string[,] indexinfo;<br />
string[,] data;<br />

so in indexinfo the first arrayfield gets the fieldname and the second one gets the index.

in data i do store the data, field on is the dataindex (meaning which line) and the second index is the value.

so the indexinfo looks like this
fieldname1 10
fieldname2 13

and the data looks like that

10 20
11 21
12 22
13 23

(each row is a dataline)

that's a lot easier. Laugh | :laugh:

but well i have to use two fields to get the info.

stephan.

blocking my application form minimizing (Please help)

dmnreddy30-Oct-07 10:33

dmnreddy

30-Oct-07 10:33

Hello,

The problem is .. I want to see my application window sticks on to the desktop (i.e it should never minimize)always like a gadget (but its not a gadget) .It should ignore Lwin+D . And toggledesktop command also (I mean it should not minimize even though we click on showdesktop.scf file).Please help me, that is heart of my academic project.I'm using c#.net 2005.

Example for my requirement is Yahoo gadget .In that we can set the property of the gadget as below so that it will never minimize.

(THANKS IN ADVANCE)

Mahi

Re: blocking my application form minimizing (Please help)

TJoe30-Oct-07 11:10

TJoe

30-Oct-07 11:10

I don't think you can "stop" the show desktop (Win+D) from hiding your application. Even items that cannot be minimized (e.g. applications with a modal dialog open) are hidden.

But I think what you looking for is an Application Desktop Toolbars[^].

Take care,
Tom

-----------------------------------------------
Check out my blog at http://tjoe.wordpress.com

Re: blocking my application form minimizing (Please help)

dmnreddy30-Oct-07 11:25

dmnreddy

30-Oct-07 11:25

Sorry, Actually Im looking for the gadget kind of thing which stays always on desktop.I have seen that application desktop toolbar .But it is visible always when we are on some other application also.

I have seen yahoo gadget and installed gadget engine to see what is the property that makes the window to stay always below some other applications and sticks to desktop that is

these are the properties values of window level of widget .
konspose, desktop, below, normal, topmost, or floating.

I want to implement one of the value that is below .

Thank you.

Mahi

Re: blocking my application form minimizing (Please help)

C# Beginner Nick30-Oct-07 11:37

C# Beginner Nick

30-Oct-07 11:37

Are you talking about This.Topmost?

Re: blocking my application form minimizing (Please help)

dmnreddy30-Oct-07 11:41

dmnreddy

30-Oct-07 11:41

No.If I keep that it always shows my application only.My requirement is it should be on desktop just like wallpaper .whenever we see wallpaper we should able to see our application.

Thank you.

Mahi

Re: blocking my application form minimizing (Please help) [modified]

Anthony Mushrow30-Oct-07 14:53

Anthony Mushrow

30-Oct-07 14:53

Wow, Lwin+D powerfull stuff. I have stopped all forms of minimizing / maximizing, but Lwin+D still gets the app out of the way.
And as for keeping it at the back... i'm not sure. Then again, you might be able to do something in WndProc to stop your window coming forward.

-- modified at 21:06 Tuesday 30th October, 2007

From what i can tell, an application gets no message when a user presses win+d. It just gets minimized.
From what i can tell of other things, the OS hides all windows, and draws the desktop over everything, and sets some active window property, or somthing similar to null. As a test for yourself, find a window you cannot minimize (try opening up the options for your browser). Do Lwin+D, now, restore or maximize any window other than your browser. As you can see, your browser is restored, though it will have received no message to maximize or restore.

And thats enough of my ramblings. I'm sure they're quite wrong, but who knows...

My current favourite word is: Waffle

Cheese is still good though.

how put strings together

stephan_00730-Oct-07 10:22

stephan_007

30-Oct-07 10:22

hi everyone!

i used a stream to read a whole txt file into a string variable. this is a copy of a template where tokens have to be replaced by values.

but because i do not know how many pages there will be i have to get it "dynamic" meaning i have to store the page template in a string variable and then copy it once, twice, ... to another one.

the first copy is already there. but because i do not want to loose the original copy i do copy it to another string variable. thats a simple assignment, that's easy. but now i wonder if i do just have to do the following

<br />
string template; // stores the streamed template info (formated!!)<br />
string output = "";   // stores the output<br />
<br />
// first assignment is easy => copy of templage in output<br />
output = template;<br />
<br />
// second copy append to the first one<br />
output = output + template;<br />

but i am not sure if it is formated correctly or if there could be problems when doing the assignment in the last line.

when the info in the textfile looks like this

line 1
line 2
.....
line n-1
line n

then i want it to look like this after having added a second copy

line 1
line 2
.....
line n-1
line n
line 1
line 2
.....
line n-1
line n

but not

line 1
line 2
.....
line n-1
line n line 1
line 2
.....
line n-1
line n

for example. the second "page" should be append to the first one stored in the string variable. and a thrird or fourth copy etc.
but what i do once could be done n times, thats not the problem.

so to sumarize: my question is how do i have to add the streamed info for the second, thrid .... time to an existing and allready filled string without loosing the format during copying?

is there some kind of
string1.append(string2) or anything similar?

thanks.
stephan.

Re: how put strings together

pmarfleet30-Oct-07 10:45

pmarfleet

30-Oct-07 10:45

There should already be a line terminator at the end of each line. You just need to ensure that you append the text for the second file after the final line terminator in the text from the first file.

You can call Environment.NewLine to get the string representation of a newline construct for the current platform.

If you are working with large strings, you should consider using an instance of the System.Text.StringBuilder class. Strings in .NET are immutable, which means that the contents of a string once created cannot be altered. If 2 strings are concatenated, a new string object must be created to store the resulting data. The StringBuilder class provides a more memory-efficient way of manipulating string data.

Paul Marfleet

Question on tree view editing with button click

C# Beginner Nick30-Oct-07 10:04

C# Beginner Nick

30-Oct-07 10:04

How would I edit the items in a tree view when i hit a button.

I'd have a list of codes in 5 different languages, but when i click C# button it'll switch all codes to C#, or C++ button change all text to C++ codes..

Thats not what i'm using it for though, just to change the items in it.

How would I be able to do that, from 2 different windows*

Re: Question on tree view editing with button click

pmarfleet30-Oct-07 10:51

pmarfleet

30-Oct-07 10:51

From the root node, write code to recursively traverse all child nodes in the tree.

For each node, alter the Text property appropriately.

Paul Marfleet

Re: Question on tree view editing with button click

C# Beginner Nick30-Oct-07 11:35

C# Beginner Nick

30-Oct-07 11:35

No, sorry let me make myself clearer

I want 1 Tree view, but i want 50 different text combinations.
I want to click a button and it will switch all the text and nodes.

Like making a form on different sallery's
Do you understand now?

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.