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donsolms wrote: maybe you can tell me what compile options MUST be set to get DLLImport to work with it?
None.
It sounds like your dll is missing a dependancy, if the dll is there. It's unmanaged, does it need MSVCRT, or the MFC dll ?
Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog
"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )
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Hi,
IIRC the unmanaged dll's that you refer to with [DllImport] must be in the Windows path
(e.g. in C:\Windows\system32); the app's bin directory is only searched for managed code.
Of course you could add your app's bin directory to the Windows path and put everything
in there.
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i quickly tried that, but it doesn't seem to work, maybe i'm not compiling the unmanaged DLL correctly?
i will write a different dll and try it with that one
rather have something you don't need, than need something you don't have
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Hi,
I reread your original post, and I am getting the impression you did it again:
using DllImport on a dll for which you were able to add a reference.
AFAIK it is one or the other:
- unmanaged code dll's need DllImport and can not be added as a reference;
- for managed code a reference must be added, and DllImport wont work.
I am not sure how it works for a COM dll, I expect you need to add a reference
and dont need DllImport...
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Luc Pattyn wrote: I am not sure how it works for a COM dll, I expect you need to add a reference
and dont need DllImport...
That is correct.
Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog
"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )
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Hello.
I am changing a property on OnComponentChanged using the ff code:
pd = TypeDescriptor.GetProperties(instance)["Size"];
pd.SetValue(instance, sz);
I dont get compiled error, but when I drop the component on the form
at runtime I got this error:
An unhandled exception of type 'System.StackOverflowException' occurred in mscorlib.dll
Im a newbie in c# so I appreciate any help
thanks.
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A stack overflow error means that the code being run by the event, is firing the event again, and so it just keeping calling itself until the stack overflows.
Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog
"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )
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Thanks Christian
I know what the error means what I dont understand is why its getting that error.
The code is not recursive nor it have infinite loop or something.
It just change the value of the property specified which is the size.
Any other idears?
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sanicra wrote: pd.SetValue(instance, sz);
doesnt this cause another (nested) ComponentChanged event ?
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Thanks Luc,
I suppose it does, so what do you suggest, how do I change a propert value when a component has changed.
What I would like to do is when you try to resize a component it will force this value (sz)
The component is a picturebox. When you resize a picturebox you can make it a square or a rectangle.
What I would like is to force the size into some value (sz) which is a computation base on some aspect ratio.
My problem is where do I change the value. I tried to put it on OnComponentChanged but it gives me that error.
Hope my problem is clear to all of you so you can help me more. Thanks
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Hi,
in my experience the methods OnXxxChanged() only get fired when there actually is a
change, not when the same value gets set. To restrict a new size somehow, I use
OnResize, and that one never kept firing on me. I havent used OnComponentChanged() yet.
I see basically three solutions:
1. try using OnResize()
2. prevent an infinite call chain by having a class variable that notes whether you
are already resizing, something like:
private bool IamResizing=false;
void OnComponentChanged() {
if (!IamResizing) {
IamResizing=true;
... your stuff
IamResizing=false;
}
}
3. prevent an infinite call chain by temporarily removing your handler from its
delegate.
ComponentChanged-=OnComponentChanged;
... your stuff
ComponentChanged+=OnComponentChanged;
Hope this helps.
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thanks. i got it sorted out with OnReSize.
I created a class and just override the OnResize and
put my code in there.
Thank you for your ideas and help.
God bless.
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hi im new to c# but i do have some experience with other languages
here the problem ive wrote a PSP Game that will allow users to make their own quizes (in pretty much plain text) but i would like to make an app to make it even easier (Console or whatever) this is what i have so far
using System;<br />
<br />
using System.Collections.Generic;<br />
using System.Text;<br />
<br />
namespace ConsoleApplication1<br />
{<br />
class Program<br />
{<br />
<br />
static void Main(string[] args)<br />
{<br />
<br />
Console.Write("How Many Questions Do You Want In This Quiz : ");<br />
string NOQuestions = Console.ReadLine();<br />
<br />
Console.Write("Enter A Question : ");<br />
string Question = Console.ReadLine();<br />
<br />
Console.Write("How Many Answers Do You Want For This Question : ");<br />
string NOAnswers = Console.ReadLine();<br />
<br />
Console.Write("Enter An Answer : ");<br />
string Answer1 = Console.ReadLine();<br />
<br />
<br />
Console.Write("Enter A Score : ");<br />
string Score1 = Console.ReadLine();<br />
<br />
Console.Write("Enter An Answer Or type No to exit the answer section : ");<br />
string Answer2 = Console.ReadLine();<br />
<br />
<br />
Console.Write("Enter A Score : ");<br />
string Score2 = Console.ReadLine();<br />
<br />
Console.Write("Enter An Answer Or type No to exit the answer section : ");<br />
string Answer3 = Console.ReadLine();<br />
<br />
<br />
if (Answer3 == "No")<br />
{<br />
Console.Write("Enter A Time : ");<br />
string Time = Console.ReadLine();<br />
Console.Write(Time + " ");<br />
Console.Write(Question + " ");<br />
Console.Write(Answer1 + " ");<br />
Console.Write(Answer2 + " ");<br />
Console.Write(Score1 + " ");<br />
Console.Write(Score2 + " ");<br />
}<br />
else<br />
{<br />
Console.Write("Enter A Score : ");<br />
string Score3 = Console.ReadLine();<br />
}<br />
<br />
<br />
}<br />
<br />
}<br />
<br />
<br />
}<br />
<br />
<br />
ok now what i need to do is to make it do either of these 2 things
1.when it asks you how many answer/question you want
i want so when the correct amount of answers has been made for it to move on to the timer
and when it done the timer create a new question and when it get to the correct amount of questions make it end
2.You type No to make it stop asking you for question or answers
here the template of a quiz i made for my app
Quiz = {<br />
{ "Question", { "Answer1", "Answer2", "Answer3"}, { Score1, Score2, Score3}, Time}<br />
}<br />
<br />
Creator = "Your Name"<br />
the brackets and speech marks must remain the same and each line is one question all the question except the last one need to have a , after it
SO COULD YOU POINT ME IN THE DIRECTION THAT I NEED TO GO THANKS
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Hi
OK, first of all you need to make sure that the user has entered a number for the number of questions. int.TryParse can be used to turn a string into a number, or tell you if it can't be done. Then you want to create a loop, as in
for (int i=0;i<numquestions;++i) where="" numquestions="" is="" the="" int="" you="" created="" as="" per="" int.tryparse
{
="" any="" code="" put="" in="" here="" will="" be="" run="" numquesions="" times.
}
so,="" then="" your="" to="" get="" a="" question="" goes="" inside="" loop="" and="" runs="" number="" of="" times="" hoped.="" i'd="" create="" struct="" represent="" answer,="" list="" them="" add="" within="" loop.
=""
<div="" class="ForumSig">Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog
"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )
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Hello,
I have a xml document like this:
< ? xml version = " 1.0 " ? >
< Accounts >
< Account ID = " 123456 " >
< FirstName > Latheesan < / FirstName >
< SecondName > Kanes < / SecondName >
< Balance > 0 < / Balance >
< OverDraftLimit > 50 < / OverDraftLimit >
< FullAddress > My Address Here < / FullAddress >
< / Account >
< / Accounts >
What i am trying to do is select one matching document node based on my XPath expression and then when found, assign each element node's value to set of strings.
So far, this is what i was able to do:
private void searchBtn1_Click(object sender, EventArgs e)<br />
{<br />
try<br />
{<br />
string fileName = "Account_Data.xml";<br />
XPathDocument doc = new XPathDocument(fileName);<br />
XPathNavigator nav = doc.CreateNavigator();<br />
<br />
XPathExpression expr;<br />
expr = nav.Compile("//Account[@ID='" + accountIDInput.Text + "']");<br />
XPathNodeIterator iterator = nav.Select(expr);<br />
<br />
nav.MoveToFirstChild();<br />
MessageBox.Show(nav.Value);<br />
}<br />
catch (Exception ex)<br />
{<br />
MessageBox.Show("Error : " + ex.Message);<br />
}<br />
}
I printed the XPath Expression result using MessageBox.Show to see what the results would be like. On the message box, i saw the entire document node and it's element nodes and their values.
How do you obtain the results after running XPath expression and assign element node's value like this:
string AccountID = nav.value;
string FirstName = nav.value;
string SecondName = nav.value;
string Balance = nav.value;
string OverDraftLimit = nav.value;
string FullAddress = nav.value;
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private void searchBtn1_Click(object sender, EventArgs e)<br />
{<br />
try<br />
{<br />
string fileName = "Account_Data.xml";<br />
XPathDocument doc = new XPathDocument(fileName);<br />
XPathNavigator nav = doc.CreateNavigator();<br />
<br />
XPathExpression expr;<br />
expr = nav.Compile("//Account[@ID='" + accountIDInput.Text + "']");<br />
XPathNodeIterator iterator = nav.Select(expr);<br />
<br />
iterator = nav.Select(expr);<br />
<br />
if (iterator.MoveNext())<br />
{<br />
XPathNavigator nav2 = iterator.Current.Clone();<br />
<br />
string accID = (nav2.GetAttribute("ID", ""));<br />
nav2.MoveToFirstChild();<br />
string firstName = (nav2.Value);<br />
nav2.MoveToNext();<br />
string lastName = (nav2.Value);<br />
nav2.MoveToNext();<br />
string currentBalance = (nav2.Value);<br />
nav2.MoveToNext();<br />
string overDraftLimit = (nav2.Value);<br />
nav2.MoveToNext();<br />
string = fullAddress = (nav2.Value);<br />
}<br />
}<br />
catch (Exception ex)<br />
{<br />
MessageBox.Show("Error : " + ex.Message);<br />
}<br />
}
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hi all !
i'm pretty newbie in the coding world and have a little problem that i cant find a solution
i have 2 richtextbox. the first is to write the text and the second to see it (read only)
so there is my code
<br />
<br />
private void button2_Click_1(object sender, EventArgs e)<br />
{<br />
DateTime dt = DateTime.Now;<br />
string str1 = dt.ToString("H:mm:ss").PadRight(10);<br />
string str2 = richTextBox1.Text;<br />
string str3 = str1 + str2 + "\n";<br />
richTextBox2.AppendText(str3);<br />
richTextBox1.Clear();<br />
the real goal is simple, i want the time to be wrote at the start of every text add. Thats why i made it like that. My problem is the "\n" at the end of the string 3. If i dont put it, then the next text is wrote a the end of the first one. If i put it and the user finish is text and press enter then the click button, i have a empty line (witch i dont want it). The richtextbox2 gonna be print at the end and its a report to be showed to the boss as a clean copy so empty lines need to be removed.
if someone can help me
btw, sorry for my english, i know i'm bad but what can i say ? i'm talking in english like in coding 
thanks 
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Um, have you tried this?
DateTime dt = DateTime.Now;<br />
this.richTextBox1.SelectedText = dt.ToString("H:mm:ss").PadRight(10);
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i just tried but it give me the time after the text
i'm still working on it
thanks for the answer though
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hi, i'm not sure anymore, i've confused myself.
i have this in a com-visible dll:
<br />
public class Interop : ITouchlibInterop<br />
{<br />
public virtual void fingerDown()<br />
{<br />
}<br />
}<br />
now in another file, my interface (winforms);
<br />
class Touch : Interop<br />
{<br />
public override void fingerDown()<br />
{<br />
}<br />
}<br />
the first class (Interop : ITouchlibInterop) is called from a c++ dll via COM. then i want my derived class - that is my interface handle the 'event' and not the com-visible dll.
now for my question:
will Touch.fingerDown() be called when Interop.fingerDown() is called?
rather have something you don't need, than need something you don't have
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Hi,
Interop a=new Touch();
a.fingerDown();
will call Touch.fingerDown() although a is declared only as an Interop object.
BTW you should start public methods with an uppercase letter.
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thanks again for you help
rather have something you don't need, than need something you don't have
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Hello guys,
i am having a problem using Delegates,
now i am working on an application where i have a label on a form and then i have a separate class in separate CS file (ie., Form1.cs and myClass.cs)
what i am trying to do : i wanted to update label1.Text every tick of a timer with the format 00:00 next tick 00:01, then next tick 00:02 and so on
so in my Class there is a timer(System.Timers.Timer/System.Threading.Timer/System.Windows.Forms.Timer) and i am trying to update the label1 in form1 using the following :
Form1 :
-----------
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
namespace WindowsApplication2
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
public void setlabeltext(Label lbl, String strValue)
{
lbl.Text = strValue;
}
private void Form1_Load(object sender, EventArgs e)
{
Class1 myClass = new Class1();
myClass.startCall();
}
}
}
myClass:
--------------
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using Timers = System.Windows.Forms.Timer;
namespace WindowsApplication2
{
class Class1
{
Form1 form1 = new Form1();
Timers timoz = new Timers();
public void timoz_Tick(object sender, EventArgs e)
{
ThreadSafeSetLable(form1.label1, DateTime.Now.Subtract(DateTime.Now).ToString());
}
private void ThreadSafeSetLable(Label lbl, string value)
{
if (form1.InvokeRequired)
{
form1.Invoke(new SetString(form1.setlabeltext), new object[] { lbl, value });
}
else
{
form1.setlabeltext(lbl, value);
}
}
private delegate void SetString(Label txtBox, string strValue);
public void startCall()
{
timoz.Interval = 1000;
timoz.Start();
timoz.Tick += new EventHandler(timoz_Tick);
}
}
}
this is not working i dont know why , it compiles no problem , in the debugging the label1.text is changing to 00:00:00 but runtime i dont see that , plus the form1.InvokeRequired never gets to "true" , i do realize that i am missing something but i dont know what , can i have help on that ? thanx
T.R.
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Tamer A.Rahman wrote: Form1 form1 = new Form1();
I'm not sure what you hope this to do, but it will create a new instance of Form1, which is in no way related to the one that is visible on your screen.
Your controls should also not be made public on the class, delegates are used to avoid such nastiness. A delegate defined in class1, should call a method in form1, and pass in the string to set. The method should assign the string to the label, and class1 calls the delegate whenever it likes, via your timer or whatever.
Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog
"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )
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well, thank you for the reply,
i got it already
it was the wrong approach from the begining and i fixed it
thanks for all the help anyway
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