Managed C++/CLI

Re: Multimedia Timer Problem in MFC VS2010

30-Mar-14 21:52

C++

void (CALLBACK *TimeProc)(UINT wTimerID, UINT msg, DWORD dwUser, DWORD dw1, DWORD dw2);

You are declaring TimeProc as a pointer to a function which is totally incorrect.

It should be like:

C++

// in the class definition in the header file:
void CALLBACK TimeProc(UINT wTimerID, UINT msg, DWORD dwUser, DWORD dw1, DWORD dw2);

// and the declaration in the .cpp file:
void CALLBACK CtestmmtimerDlg::TimeProc(UINT wTimerID, UINT msg, DWORD dwUser, DWORD dw1, DWORD dw2)
{
    // implementation code here
}

lephanhung31-Mar-14 2:11

lephanhung

31-Mar-14 2:11

Thank you very much for your help! But when I try to follow your code, the error will be:

error C3867: 'CtestmmtimerDlg::TimeProc': function call missing argument list; use '&CtestmmtimerDlg::TimeProc' to create a pointer to member

Re: Multimedia Timer Problem in MFC VS2010

lephanhung31-Mar-14 19:24

lephanhung

31-Mar-14 19:24

I finished to run it ^^. Just move the CALLBACK function before click button and don't need to declare CALLBACK in header file. Thank you so much for your help ^^

Compiler Bug in C++/CLI vs Native C++

John Schroedl28-Mar-14 1:51

John Schroedl

28-Mar-14 1:51

FYI:

I entered this Connect bug found by a coworker. If you're a C++/CLI dev you may want to upvote it.

The /clr compiler issues an error whereas the C++ compiler (and clang/llvm on Mac) accept the template code. It's a template using std::is_base_of and isn't too crazy. There's no managed code involved at all in fact (ie. no ref classes).

http://connect.microsoft.com/VisualStudio/feedback/details/841299/unexpected-undefined-class-error-using-std-is-base-of-with-c-cli-code[^]

John

Run exe resource from memory.

Member 1055963526-Mar-14 1:23

Member 10559635

26-Mar-14 1:23

Hi i have a stub that extract a resource. I want to run this resource directly from memory without write a file.

is it possible?

Re: Run exe resource from memory.

Richard Andrew x6426-Mar-14 5:41

Richard Andrew x64

26-Mar-14 5:41

That depends if the resource is an exe or a dll. If it's an exe, there is no way, but if it's a dll, then check out this link:
Loading a Dll From Memory[^]

The difficult we do right away...
...the impossible takes slightly longer.

cursor problem

neterfari26-Mar-14 1:10

26-Mar-14 1:10

Hello ,
I have a problem, I use LoadCursor () , but at runtime it shows me two error messages.
Here is the code:
term.h

C++

void LoadCursor(double latitude,double longitude);

term.cpp

C++

void Term::LoadCursor(double longitude,double latitude)
{
	CursorLongitudeCurrent=longitude;
	CursorLatitudeCurrent=latitude;
}

nem.h

C++

double ReadLatitudeValue(void);
string ReadLongitude(void);

FormD.h

C++

private: System::Void TMR_RS232Read_Tick(System::Object^  sender, System::EventArgs^  e) {
      ptr_Term> LoadCursor(ptr_nem->ReadLatitudeValue(),ptr_nem->ReadLongitudeValue());
}

AND errors:
first:
error LNK2019: unresolved external symbol "public: void __thiscall term::LoadCursorW(double,double)" (?LoadCursorW@term@@$$FQAEXNN@Z) referenced in the function "private: void __clrcall FormD.cpp::Form_D::TMR_RS232Read_Tick(class System::Object ^,class System::EventArgs ^)" (?TMR_RS232Read_Tick@FormD@FormD.cpp@@$$FA$AAMXP$AAVObject@System@@P$AAVEventArgs@4@@Z)

Second:
error LNK2028: unresolved token (0A0004AF) "public: void __thiscall term::LoadCursorW(double,double)" (?LoadCursorW@term@@$$FQAEXNN@Z) referenced in the function "private: void __clrcall FormD.cpp::FormD::TMR_RS232Read_Tick(class System::Object ^,class System::EventArgs ^)" (?TMR_RS232Read_Tick@FormD@FormD.cpp@@$$FA$AAMXP$AAVObject@System@@P$AAVEventArgs@4@@Z)

if you have an idea
Thank you

modified 26-Mar-14 7:24am.

Richard MacCutchan26-Mar-14 1:38

26-Mar-14 1:38

Your function is defined as LoadCursor, but somewhere in your code you are trying to call LoadCursorW. This is probably due to the fact that LoadCursor is defined in Winuser.h as described in http://msdn.microsoft.com/en-us/library/windows/desktop/ms648391(v=vs.85).aspx[^]. Try changing your function name to something else, or use a namespace to avoid conflicts.

neterfari26-Mar-14 3:17

26-Mar-14 3:17

thank you very much Richard Thumbs Up | :thumbsup:

neterfari26-Mar-14 3:19

26-Mar-14 3:19

I changed the name of the function and I have no error

but my cursor does not appear you have an idea please

modified 26-Mar-14 9:45am.

John Schroedl26-Mar-14 5:06

John Schroedl

26-Mar-14 5:06

LoadCursor just loads the resource, it doesn't change the system cursor to that shape.

We'd need to see your code where you try to use the cursor.
For example, do you use it:
* In response to a WM_SETCURSOR message?
* In a direct call to SetCursor()?
* Passed to RegisterClass?

John

Richard MacCutchan26-Mar-14 5:35

26-Mar-14 5:35

Since your code does not do anything (as far as we can see) it's difficult to answer that question. What is this function supposed to do?

neterfari26-Mar-14 10:02

26-Mar-14 10:02

Hello thank you for your help.I have 4 function.

Term.h

C++

bool stateCursor; // Clignote du curseur
void CreateCursor(PaintEA e);

Term.cpp

C++

void Term::CreateCursor(PaintEA e){

SolidBrush^ blackBrush = gcnew SolidBrush( Color::Black );
SolidBrush^ redBrush = gcnew SolidBrush( Color::Red );

if(CurPointCurrent!=CurPointPrevious) {

		int deltaX=CurPointCurrent.X-CurPointPrevious.X;
		int deltaY=CurPointCurrent.Y-CurPointPrevious.Y;
		float distance= sqrt(pow((float)deltaX,2)+pow((float)deltaY,2));
		float vectorX=deltaX/distance*polygoneLength;
		float vectorY=deltaY/distance*polygoneLength;
		// Creation des points de polygone 
		Point point1 = Point(CurPointCurrent.X+vectorX,CurPointCurrent.Y+vectorY);
		Point point2 = Point(CurPointCurrent.X+vectorX*-0.866-vectorY*0.5,CurPointCurrent.Y+vectorX*0.5+vectorY*-0.866);
		Point point3 = CurPointCurrent;
		Point point4 = Point(CurPointCurrent.X+vectorX*-0.866-vectorY*-0.5,CurPointCurrent.Y+vectorX*-0.5+vectorY*-0.866);

		// Dessine (clignoter noir <-> rouge)
		array<Point>^ curvePoints = {point1,point2,point3,point4};
		if(stateCursor==false) {
				e->Graphics->FillPolygon( blackBrush , curvePoints );
				stateCursor=true;
		}
		else {
				e->Graphics->FillPolygon( redBrush, curvePoints );
				stateCursor=false;
			}
}
else{
		if(stateCursor==false) {
			e->Graphics->FillEllipse( blackBrush , CurPointCurrent.X-circleRadius,CurPointCurrent.Y-circleRadius,circleRadius*2,circleRadius*2);
			stateCursor=true;
		}
		else {
			e->Graphics->FillEllipse( redBrush , CurPointCurrent.X-circleRadius,CurPointCurrent.Y-circleRadius,circleRadius*2,circleRadius*2 );
			stateCursor=false;
		}
}
}

FormD.h

C++

private: System::Void picB_MainMap_Paint(System::Object^  sender, System::Windows::Forms::PaintEventArgs^  e) {

	if(!first_time) {
		ptr_Term->CreateCursor(e);
	}
}

C++

private: System::Void picB_SubZone_Paint(System::Object^  sender, System::Windows::Forms::PaintEventArgs^  e) {

if(!first_time) {

	ptr_Term->CreateCursor(e);

}
}

Thanks

Richard MacCutchan26-Mar-14 22:48

26-Mar-14 22:48

Sorry, I don't understand what you are trying to illustrate.

neterfari26-Mar-14 23:08

26-Mar-14 23:08

sorry my english is very bad. I tried to create a cursor. I have a function that nominated
CreateCursor in Term.h and Term.cpp and I call this function in FormD.h but not display the cursor

Richard MacCutchan26-Mar-14 23:18

26-Mar-14 23:18

I am still not clear what you are trying to do, but you may need to read http://msdn.microsoft.com/en-us/library/system.windows.forms.cursor(v=vs.110).aspx[^].

neterfari27-Mar-14 0:38

Convert a C# WinSCP program to C++/CLI

27-Mar-14 0:38

thank you very much for your help Richard. Rose | [Rose]

I found the error, and my program works.
error is not in the code that I've written here Smile | :)

modified 27-Mar-14 6:53am.

biop.codeproject19-Mar-14 23:06

biop.codeproject

19-Mar-14 23:06

Please help! Even I am experienced in C++ and C#, I am new to C++/CLI.

I have written a simple C# program using WinSCP library. I know how to do it in C# as there is already an example (http://winscp.net/eng/docs/library#csharp[^])

I try to convert but I do not get any success.

#using "WinSCPnet.dll"
using namespace System;

int main(array<System::String ^> ^args)
{
   try
   {
       Console::WriteLine("Staring...");

       WinSCP::SessionOptons ^ sftpSessionOptions = gcnew
          WinSCP::SessionOptions::SessionOptions (
             WinSCP::SessionOptions::Protocol = 
                   WinSCP::Protocol::Sftp,
                   ...
          );
...
}

But I get this error:
Error c2061: syntax error: identifer '{ctor}'

why? Please help in the translation.
Yes I have made sure it compiles with '/clr' option.

Richard MacCutchan19-Mar-14 23:31

19-Mar-14 23:31

You are passing parameters to a parameterless constructor; see http://winscp.net/eng/docs/library_sessionoptions#constructors[^]. You need to create the object and then set the properties separately.

biop.codeproject20-Mar-14 17:24

biop.codeproject

20-Mar-14 17:24

Richard,

Thanks for your help. I get it. The thing is when I mouse over the new SessionOptions in this line in the C# program,

SessionOptions sessionOptions = new SessionOptions {
   Protocol = Protocol.Sftp,

I see SessionOptions.SessionOptions(). With that in mind, when I do the C++ program, I convert that line to:

WinSCP::SessionOptions ^ sftpOptions = gcnew
                         WinSCP::SessionOptions::SessionOptions() 
sftpOptions->Protocol = WinSCP::Protocol::Sftp;

As you can see, that (WinSCP::SessionOptions::SessionOptions()) is not a valid call. I change that to gcnew WinSCP::SessionOptions() and it works! Thanks.

sunshine@work.20-Mar-14 0:03

sunshine@work.

20-Mar-14 0:03

Hello,..
Hey i dont know how u willtake my suggestion but , i have an idea for u
Use C# to C++ convertor.. it may help you..

int Example::Main()
{
    try
    {
        // Setup session options
        SessionOptions ^sessionOptions = gcnew SessionOptions {Protocol = Protocol::Sftp, HostName = "example.com", UserName = "user", Password = "mypassword", SshHostKeyFingerprint = "ssh-rsa 2048 xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx"};

     using (Session session = new Session())
        Session ^session = gcnew Session();
        try
        {
            // Connect
            session->Open(sessionOptions);

            // Upload files
            TransferOptions ^transferOptions = gcnew TransferOptions();
            transferOptions->TransferMode = TransferMode::Binary;

            TransferOperationResult ^transferResult;
            transferResult = session->PutFiles("d:\\toupload\\*", "/home/user/", false, transferOptions);

            // Throw on any error
            transferResult->Check();

            // Print results
            for each (TransferEventArgs ^transfer in transferResult->Transfers)
            {
                Console::WriteLine("Upload of {0} succeeded", transfer->FileName);
            }
        }
        finally
        {
            delete session;
        }

        return 0;
    }
    catch (Exception ^e)
    {
        Console::WriteLine("Error: {0}", e);
        return 1;
    }

This ur sample C# code to C++/CLI.

biop.codeproject20-Mar-14 15:43

biop.codeproject

20-Mar-14 15:43

I try that converter, but when I compile, there are problems. Thanks for the suggestion. Smile | :)

C++ to Managed CLI

sunshine@work.19-Mar-14 5:01

sunshine@work.

19-Mar-14 5:01

Hi, i am working on a project using C and C++.
But now i have to use lil bit of C# code in it.So i made a sample application , converted all the c# code to managed C++/CLI.I changed the properties of sample app to Clr support.It worked fine.

But in my current project, i have some pure c classes also. So when i was changing the property of my project to CLR , it gave me error of xyz.c file cannot convert into \clr.
I dont know wat to do?i cannot convert xyz.c class into xyz.cpp

Can anyone suggest what should i do... Is it possible that i mange to use mannaged c++ also and i still donot have to convert the whole project into CLR.

Re: C++ to Managed CLI

Richard MacCutchan19-Mar-14 7:33