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You definitely can use a C# DLL in a C++ project.
But it is not as simple as exporting from the DLL and binding to it.
You have to create a COM Callable Wrapper (CCW) around your C# managed code.
Please check the documentation of how this is done.
Then you can access the DLL like a COM DLL.
«_Superman_»
I love work. It gives me something to do between weekends.
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I think I'll end up my entire life trying to make a nodepad application. The wizard generated code & functionalities are totally misleading. wtf : Today should be my last attempt for this doc/view bullshit. Somebody please help.
Let me explain what are the things I've done.
1. Created a new SDI application.
2. Derived the view from CEditView. Found & replaced all CView with CEditView.
3. In the document class, added a CString member m_csText also a getter method to get this string.
4. Modified CMyDocument::Serialize() as ,
void CSDITest4Doc::Serialize(CArchive& ar)
{
if (ar.IsStoring())
{
ar.Write(m_csText,m_csText.GetLength());
}
else
{
ar.Read(...read into m_csText...);
AfxMessageBox(m_csText);
UpdateAllViews(0);
}
}
5. In the View, added this code for OnUpdate:
void CSDITest4View::OnUpdate(CEditView* , LPARAM , CObject* )
{
CSDITest4Doc* pDoc = this->GetDocument();
CString cs = pDoc->getText();
CEdit& cText = GetEditCtrl();
cText.SetWindowTextW(cs);
}
As I read in every damn place, they say to "make use" of the standard code, without overriding anything or any modification on save file, open file etc.
Now my questions.
1. Why it doesn't show the string in the Edit window?The OnUpdate in view doesn't get called.
2. Why the next time I try to open the same file, it doesn't get into the ::Serialize read function? If I open some other document, it goes there. Otherwise, I need to close the app and open again. Why so?
3. Why it doesn't save anything?
4. From where the ::Serialize function is actually getting called? I want to see the internal MFC code.
5. If I want to debug, set through a "Open file" operation, what should I do? After it shows the File open dialog, it doesn't stop anywhere.
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As you've started to do... Debug, debug, debug...
To answer in slightly random order, I put a break point in my program. If I load a recent file, then the code goes from CWinApp::OnOpenRecentFile to the function
CDocument* CWinApp::OpenDocumentFile(LPCTSTR lpszFileName) .
This function is also called from the file open command.
I suspect you are never calling the CDocument::SetModifiedFlag () method, so MFC is being all efficent and saying "nothing's changed - let's save effort".
That's (2), (3), (4) and (5) answered.
(1) You'll have to answer that with the debugger. But I can't see any CMyEditView::OnEnChange handler, to update the string in the document whenever you press a key and see a shiny new letter appearing in your edit document.
Iain.
Codeproject MVP for C++, I can't believe it's for my lounge posts...
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[Reads..& Goes back into the fuming lab.]
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Dude, I've been using this doc/view bullshit since it was first released. I have no doubt there are many others that could say the same. While I am not unsympathetic to your problems ( ok maybe I am ) at this point you have become your worst problem.
Some guy in the XML forum the other day said XSLT was a stupid standard. Do you see a pattern here?
My advice, since Iain has already provided technical advice, is that you calm down and listen to this song[^]
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What about this one?[^]
lol, but yep I'm losing my patience. As you can see the class names in the code I posted have "4" on them. that's the 4th time I'm creating an application from scratch. For some time I couldn't figure out that it's behaving different when you open the recent file. I thought I messed up the code while trying something. And so recreated again & when I found it, I really felt terrible.
Another thing, why the bloody wizard doesn't ask me if I'm willing to derive the view from CEdit, or CForm or something? It looks nasty to find all occurrence of CView with CEditView. Or I'm not using a simpler way that's already there?
Also, the reference in the books irritate me like anything. In the books I referred nobody has tried to explain a sample. In Tom Archer's VC++ book, he has, but not following what's suggested in other place.
Just a little challenge for you. Try to spot a downloadable good sample SDI application. I hope you win.
After digging deep into google, I manged to get This one[^]
But it has got some strange language inbetween.
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grassrootkit wrote: Another thing, why the bloody wizard doesn't ask me if I'm willing to derive the view from CEdit, or CForm or something?
It does.
"Old age is like a bank account. You withdraw later in life what you have deposited along the way." - Unknown
"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons
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grassrootkit wrote: Just a little challenge for you. Try to spot a downloadable good sample SDI application.
You have not posted which version of Visual Studio you are using but the ones I have install sample applications on my hard drive. In the new versions like VS2008 they are all located in one zip file. For C++ applications there are a large number of samples. It's hard to believe at least one of them isn't an SDI.
Changing subjects. There are several Windows C++ Frameworks. I imagine they would all be somewhat equally difficult to understand for someone that might not have a working grasp of C++ language, Design Patterns and the Windows SDK. I don't know what your background is but if you are a beginner perhaps this subject is somewhat beyond your current capabilities.
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Hi led, I use VS2005 but I'd have accepted a sample from any version. btw, I sorted out the problem. Please Check my reply to David Crow[^].
If you have any sample applications on SDI, (it may be a complex one), you may send one to grassrootkit_at_g.m.a.i.l. I'm new only to UI applications.. I've been around C++ for quite some time so shouldn't be a problem.
Thanks for the responses.
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grassrootkit wrote: I think I'll end up my entire life trying to make a nodepad application.
Strange, as I just did this in all of 10 seconds without changing any of the code.
grassrootkit wrote: Found & replaced all CView with CEditView.
Why are you doing this manually? AppWizard will do it for you if you select CEditView as the base class.
BTW, I am using VS6.
"Old age is like a bank account. You withdraw later in life what you have deposited along the way." - Unknown
"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons
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Thanks for your encouragement. Here goes Sample-Application-5. I'm going out for a while now. Will update you with my new sample. Thanks.
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Also, please try to answer me even if the topic goes off the screen. I find people, who really helped, not replying me when the thread goes of the visual range. I hope you'd help me. I wish I don't create any new thread on this topic again. Thanks.
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grassrootkit wrote: Also, please try to answer me even if the topic goes off the screen. I find people, who really helped, not replying me when the thread goes of the visual range.
As long as you reply to me and not someone else in the thread, that's usually the case. There are occasions where I may go back and revisit a thread to see how it turned out, but those are the exception.
"Old age is like a bank account. You withdraw later in life what you have deposited along the way." - Unknown
"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons
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Can't believe it's creating a notepad app by default. I had wasted a lot of time trying to do it manually. Thanks David. I'd compare the one I changed manually & the wizard generated. The main difference I see with a glimpse is that the wizard generated app calls the base CEditViews ::Serialize() method.
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Still I got a question,
When you open a new file using the File->Open menu, where's the event handled? I mean I would like to see the place where it creates the CFileDialog & does a DoModal(). Where do I put a break point?
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grassrootkit wrote: When you open a new file using the File->Open menu, where's the event handled? I mean I would like to see the place where it creates the CFileDialog & does a DoModal().
That happens deep within the bowels of MFC, not at your application level.
"Old age is like a bank account. You withdraw later in life what you have deposited along the way." - Unknown
"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons
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CAN ANY ONE TELL ME WHY IT SKIPS THE THIRD "IF" AND GOES ON TO THE FORTH?
/* This programs scans input*/
#include <stdio.h>
main()
{ char ans;
printf("\n Do you want to play?(Y/N) ");
scanf("%c",&ans);
if ((ans == 'y'))
{ if (ans == 'y')
{ printf("\n Ok lets play! Press (Y) ");
}
}
/*THIS IS WHERE IT SKIPS*/
scanf("%c",&ans);
if ((ans == 'y'))
{ if (ans == 'y')
{ printf("\n Press (Y) again ");
}
}
/*AND DOES THIS INSTEAD*/
scanf("%c",&ans);
if ((ans == 'y'))
{ if ((ans == 'y'))
{ printf("\n Program Success!\n\n");
}
}
return 0; }
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Note that I (a) read the forum guidelines about using the pre tag, (b) formatted your code so it is readable, and (c) have located my Caps Lock key.
I did however use multiple exclamation marks so it still looks like I was mad while typing.
main()
{
char ans;
printf("\n Do you want to play?(Y/N) ");
scanf("%c",&ans);
if ((ans == 'y'))
{
if (ans == 'y')
{
printf("\n Ok lets play! Press (Y) ");
}
}
scanf("%c",&ans);
if ((ans == 'y'))
{
if (ans == 'y')
{
printf("\n Press (Y) again ");
}
}
scanf("%c",&ans);
if ((ans == 'y'))
{
if ((ans == 'y'))
{
printf("\n Program Success!\n\n");
}
}
return 0;
}
Without running your program one line at a time, I don't know why it's passing over the middle test. But you are testing everything twice, which makes me suspicious.
I would single step through, and have a close look at the value of ans each time.
I would not be surprised to find that it is 'y' the first time it is called, and '\n' the second time, because you pressed Y and then pressed return.
But that's your voyage of discovery. Good luck!
Iain.
Codeproject MVP for C++, I can't believe it's for my lounge posts...
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the double "if"s are there because i am a n00b and really dont know, i just want a program to keep asking the users question for 4 terms and collect data, this is the only way i know how and it isnt working. I just started 1 week ago. 
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Don't worry about it. Once upon a time we were all beginners. Heck, in the majority of software stuff, I *still* am a beginner.
Don't ask me to knock up an e-commerce website. I just about know the name of php/mysql and that's it. I like to think I could learn, but even so...
The big tip I can give you is to single step through your code, keeping an eye on the contents of the variables. The double testing for y is not good though - fix that now before you get into bad habits!
Good luck,
Iain.
Codeproject MVP for C++, I can't believe it's for my lounge posts...
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Hi,
in one weeks time, you could have read an entire tutorial book from cover to cover; that would have saved you a lot of time and problems, and given you lots of insight and knowledge already.
BTW: when you call scanf twice, it needs input twice. Did you provide a double 'y'? how about newline stuff?
Luc Pattyn [Forum Guidelines] [My Articles]
- before you ask a question here, search CodeProject, then Google
- the quality and detail of your question reflects on the effectiveness of the help you are likely to get
- use the code block button (PRE tags) to preserve formatting when showing multi-line code snippets
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Iain Clarke wrote: Note that I (a) read the forum guidelines about using the pre tag, (b) formatted your code so it is readable, and (c) have located my Caps Lock key.
I did however use multiple exclamation marks so it still looks like I was mad while typing.
That's
F A N T A S T I C !
No need to say I've added it to the CP's Memorable Quotes page [^].
If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.
This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke
[My articles]
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lincoding wrote: CAN ANY ONE TELL ME WHY IT SKIPS THE THIRD "IF" AND GOES ON TO THE FORTH?
Why not set a breakpoint on that line and check the value of ans?
You might also want to check out fflush().
"Old age is like a bank account. You withdraw later in life what you have deposited along the way." - Unknown
"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons
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Try using else after your if's - if (sorry) it doesn't do the 'if' it will then perform the 'else' and you can put in a line to print out 'ans' to the screen to see what it really is.
One little thing, Users are a bit odd, if you ask them to type 'Y' upper case, then test for 'y' lower case you might find they didn't do what you expect (they never do).
You could test for if(ans == 'y' || and == 'Y') just in case.
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Instead of this:
scanf("%c", &ans);
use this:
ans = getch();
include conio.h for that.
> The problem with computers is that they do what you tell them to do and not what you want them to do. <
> Life: great graphics, but the gameplay sux. <
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