Managed C++/CLI Discussion Boards

Re: retrieve words in a HTML page

Richard MacCutchan2-Apr-14 1:22

Richard MacCutchan

2-Apr-14 1:22

This is the Managed C++ forum; please post your question in the proper place.

Re: retrieve words in a HTML page

neterfari2-Apr-14 3:45

neterfari

2-Apr-14 3:45

I think I'm good endroit.parce I have to do all this in c + + / cli.
I get the source code of the site with c + + and I have records in a xml file. I route the file and now I have to recover word and it will be with c + + / cli.

Re: retrieve words in a HTML page

Richard MacCutchan2-Apr-14 4:02

Richard MacCutchan

2-Apr-14 4:02

Sorry, but it is not clear what your problem is. If you are looking for a simple XML parser then try http://msdn.microsoft.com/en-us/magazine/cc163436.aspx[^].

Re: retrieve words in a HTML page

neterfari2-Apr-14 4:26

neterfari

2-Apr-14 4:26

Thank you

Multimedia Timer Problem in MFC VS2010

lephanhung30-Mar-14 19:44

lephanhung

30-Mar-14 19:44

I want to use a mm_timer for my application by 60Hz or less Big Grin | :-D

. This is my testing code.

- In "testmmtimerDlg.h" header file:

#include "mmsystem.h"
#pragma once
#pragma comment(lib, "winmm.lib")

public:
	double m_dcount;
	static void CALLBACK TimeProc(UINT wTimerID, UINT msg, DWORD dwUser, DWORD dw1, DWORD dw2);

	void MMTimerHandler(UINT nIDEvent);
	void StopTimer();
		
	MMRESULT m_Timer;	
	DWORD resolution;</pre>

- In "testmmtimerDlg.cpp" file:

<pre>void CtestmmtimerDlg::OnBnClickedTest()
{
	// TODO: Add your control notification handler code here
	m_dcount = 0;
	// Set resolution to the minimum supported by the system
	
	TIMECAPS tc;
	timeGetDevCaps(&tc, sizeof(TIMECAPS));
	resolution = min(max(tc.wPeriodMin, 0), tc.wPeriodMax);
	timeBeginPeriod(resolution);
	
	// create the timer
	m_Timer = timeSetEvent(10,resolution,TimeProc,(DWORD)this,TIME_PERIODIC);
}

void CALLBACK TimeProc(UINT wTimerID, UINT msg, DWORD dwUser, DWORD dw1, DWORD dw2)
{
	// This is used only to call MMTimerHandler

	// Typically, this function is static member of CTimersDlg

	CtestmmtimerDlg* obj = (CtestmmtimerDlg*) dwUser;
	obj->MMTimerHandler(wTimerID);
}

void CtestmmtimerDlg::StopTimer()
{
    // destroy the timer
    timeKillEvent(m_Timer);

    // reset the timer
    timeEndPeriod (resolution);
}

==>> But when I try to debug, I have 2 problem:
- First, "

testmmtimerDlg.obj : error LNK2019: unresolved external symbol "public: static void __stdcall CtestmmtimerDlg::TimeProc(unsigned int,unsigned int,unsigned long,unsigned long,unsigned long)" (?TimeProc@CtestmmtimerDlg@@SGXIIKKK@Z) referenced in function "public: void __thiscall CtestmmtimerDlg::OnBnClickedTest(void)" (?OnBnClickedTest@CtestmmtimerDlg@@QAEXXZ)
1>C:\Users\HungReo\Documents\Visual Studio 2010\Projects\testmmtimer\Debug\testmmtimer.exe : fatal error LNK1120: 1 unresolved externals

"

- Second, in header file, I try to change:

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

==>>>> OxC0000005: Access Violoation

- May someone help me to solve these problem???

modified 31-Mar-14 0:54am.

Re: Multimedia Timer Problem in MFC VS2010

Richard MacCutchan30-Mar-14 22:52

Richard MacCutchan

30-Mar-14 22:52

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
}

Re: Multimedia Timer Problem in MFC VS2010

lephanhung31-Mar-14 3:11

lephanhung

31-Mar-14 3:11

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 20:24

lephanhung

31-Mar-14 20:24

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 2:51

John Schroedl

28-Mar-14 2:51

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 2:23

Member 10559635

26-Mar-14 2:23

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 6:41

Richard Andrew x64

26-Mar-14 6:41

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 2:10

neterfari

26-Mar-14 2:10

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.

Re: cursor problem

Richard MacCutchan26-Mar-14 2:38

Richard MacCutchan

26-Mar-14 2:38

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.

Re: cursor problem

neterfari26-Mar-14 4:17

neterfari

26-Mar-14 4:17

thank you very much Richard Thumbs Up | :thumbsup:

Re: cursor problem

neterfari26-Mar-14 4:19

neterfari

26-Mar-14 4:19

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.

Re: cursor problem

John Schroedl26-Mar-14 6:06

John Schroedl

26-Mar-14 6:06

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

Re: cursor problem

Richard MacCutchan26-Mar-14 6:35

Richard MacCutchan

26-Mar-14 6:35

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?

Re: cursor problem

neterfari26-Mar-14 11:02

neterfari

26-Mar-14 11:02

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

Re: cursor problem

Richard MacCutchan26-Mar-14 23:48

Richard MacCutchan

26-Mar-14 23:48

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

Re: cursor problem

neterfari27-Mar-14 0:08

neterfari

27-Mar-14 0:08

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

Re: cursor problem

Richard MacCutchan27-Mar-14 0:18

Richard MacCutchan

27-Mar-14 0:18

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[^].

Re: cursor problem

neterfari27-Mar-14 1:38

neterfari

27-Mar-14 1:38

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.

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

biop.codeproject20-Mar-14 0:06

biop.codeproject

20-Mar-14 0:06

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.

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

Richard MacCutchan20-Mar-14 0:31

Richard MacCutchan

20-Mar-14 0:31

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.

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

biop.codeproject20-Mar-14 18:24

biop.codeproject

20-Mar-14 18:24

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.

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