FSXA Adding a menu in FSX

[Pierre95]

Bonjour,

Il y a un moment, caKus m'a aidé à introduire un menu dans FSX grâce à une dll de son cru.
Je souhaiterais modifié celle ci pour lancer une application à partir d'une variable string en lieu et place d'une chaîne statique comme:

TCHAR pg[] = L"D:\\Program Files (x86)\\Concorde Performance System\\CDC.EXE\0" ;

Comment faire pour un ignorant en C++comme moi.

Merci de ton aide
Cordialement
Pierre

 

[ddawson]

Pierre,

Il y a des instructions ici:
http://msdn.microsoft.com/en-us/library/ms682425(v=vs.85).aspx

Si la page est en anglais, on peut la changer par cliquer sur le lien en haut de la page.

Doug

 

[Pierre95]

Hi Doug,

Thanks for reply.

The way you show me needs to change a lot of code in the concerned dll.
Unfortunately, I'm a very new bie in C++ and unable to do this way.

Is there a mean to convert a string variable into PCHAR?

Thanks for help

Pierre

 

[mgh]

Try converting youe ASCII string to a Unicode string as shown in the snippet:

char AsciiString[] = "Hello World";
wchar_t UnicodeString[MAX_PATH];

MultiByteToWideChar(CP_ACP, 0, AsciiString, -1, UnicodeString, MAX_PATH);

 

[Pierre95]

Thanks for reply,

What I want to do is using the TCHAR with a string variable read in a text file.
The variable contains the path of application to launch which could change from one user to another.

I cant pass through a static text string.

Thanks for help

Cheers
Pierre

 

[mgh]

My snippet converts an Ansi String (char*) variable to a Unicode String(wchar_t*) variable.

There is no such thing as a TCHAR variable. TCHAR is a macro defined by:

#ifdef _UNICODE
typedef wchar_t TCHAR;
#else
typedef char TCHAR;
#endif

This defines TCHAR as wchar-t for a UNICODE build and char otherwise.

 

[Pierre95]

Thanks Mgh,

Maybe you know another way do do that without a TCHAR?

Thanks for your help

Cheers
Pierre

 

[ddawson]

Thanks Mgh,
Maybe you know another way do do that without a TCHAR?
Thanks for your help
Cheers
Pierre

Your TCHAR array, pg, should work with CreateProcess.

Doug

 

[mgh]

Can you explain exactly what you want to do?

EDIT

Do you want to click on the same menu item but have a different name for the .exe file depending on some flag/trigger?

 

[Pierre95]

Hello Doug and Mgh,

Thanks for your patience.
In fact it is quite simple but my explanation isn't.

That I want to do is launching an .exe from the fsx menu.

This .exe is located in my application installation folder which may have different path depending of installation folder selected by each user.

This location even may be on network computer linked to another with FSX.

I would to have a little text file included in fsx main folder containing the path to my application and read by the dll and concatenated with .exe name launch the .exe file through the menu.

Hope to be clear

Thanks again for help
Pierre

 

[mgh]

The following snippet reads a single file path into the variable ExeFileName[] from a text file called MyTestFile.txt. It then converts it as UNICODE to the artDLL variable pg[].

FILE *fp;  // File pointer
char ExeFileName[MAX_PATH + 1];  // exe file name
char FileName[MAX_PATH + 1];  // source file name
char ch;  // ANSI character
int c = 0;// Counter

// Set file name
strcpy(FileName, "C:\\...\\MyTestFile.txt");

// Open ANSI text file for read only
fp = fopen(FileName, "r");

// Read all characters up to but excluding EOF
while ((ch = fgetc(fp)) != EOF)
    {
    // Build file name
    ExeFileName[c] = ch;
    ++c;
    }

// Close the file
fclose(fp);

// Add terminating zero ('\0')
ExeFileName[c] = '\0';

// Convert to UNICODE (wchar_t)
MultiByteToWideChar(CP_ACP, 0, ExeFileName, -1, pg, MAX_PATH);

[COLOR="Silver"]// Concat path + program name in startFLL
wcscat(szFolderPath, pg) ;

[/COLOR]

EDIT

I just noticed that in StartDLL szFolderPath contains the path to the "Program Files folder. A typical path is C:\Program Files." Is that what you want?

 

[Pierre95]

Hi Mgh,

I will try your solution today and then back to give you the result.

Thanks so much to take your time send me reply.

Best Regards
Pierre

 

[Pierre95]

Hi Mgh,

I've tried unsuccessfully your solution.
Menu are added in FSX, but exe's files not launched when click on them.
May be I've forgot something:

Here is the complete code I use:

// CPSModulesStartDll.cpp*: définit les fonctions exportées pour l'application DLL.
//
#define _CRT_SECURE_NO_WARNINGS
#include <windows.h>
#include <tchar.h>
#include <stdio.h>
#include <Shlobj.h>
#include <string.h>
#include "SimConnect.h"
#include <wchar.h>



static enum GROUP_ID {
	GROUP_MENU
};

static enum EVENT_ID {
	EVENT_MENU_START,
 	EVENT_SUBMENU_START,
    EVENT_SUBMENU1_START
};


FILE *fp;
char ExeFileName[MAX_PATH + 1];
char FileName[MAX_PATH + 1];
char ch;
int c = 0;
wchar_t pg[MAX_PATH];

HANDLE  hSimConnect = NULL;
static int quit = 0 ;


void CALLBACK MyDispatchProcMI(SIMCONNECT_RECV* pData, DWORD cbData, void *pContext)
{
	//HRESULT hr;
	switch(pData->dwID)
	{
	case SIMCONNECT_RECV_ID_EVENT:
		{
			SIMCONNECT_RECV_EVENT *evt = (SIMCONNECT_RECV_EVENT*)pData;

			switch(evt->uEventID)
			{
			case EVENT_SUBMENU_START:
				{
					STARTUPINFO si = { 0 };
					si.cb = sizeof(si);
					si.dwFlags = STARTF_USESHOWWINDOW;
					si.wShowWindow = SW_SHOWNORMAL  ;

					PROCESS_INFORMATION pi = { 0 };
					
					
					strcpy(FileName, "XCPS1.dat"); // Contains: d:\Program Files (x86)\Concorde Performance System\CFM.exe
					fp = fopen(FileName, "r");
					while ((ch = fgetc(fp)) != EOF)
					{
						ExeFileName[c] =ch;
						++c;
					}
					fclose(fp);
					ExeFileName[c] = '\0';
					MultiByteToWideChar(CP_ACP, 0, ExeFileName, -1, pg, MAX_PATH);
																
					::CreateProcess(NULL, pg , NULL, NULL, FALSE, 
						NORMAL_PRIORITY_CLASS, NULL, NULL, &si, &pi) ;

					break;
				}
              case EVENT_SUBMENU1_START:
				  {
					  STARTUPINFO si = { 0 };
					si.cb = sizeof(si);
					si.dwFlags = STARTF_USESHOWWINDOW;
					si.wShowWindow = SW_SHOWNORMAL  ;

					PROCESS_INFORMATION pi = { 0 };
	

					strcpy(FileName, "XCPS2.dat"); //Contains: d:\Program Files (x86)\Concorde Performance System\CDC.exe
					fp = fopen(FileName, "r");
					while ((ch = fgetc(fp)) != EOF)
					{
						ExeFileName[c] =ch;
						++c;
					}
					fclose(fp);
					ExeFileName[c] = '\0';
					MultiByteToWideChar(CP_ACP, 0, ExeFileName, -1, pg, MAX_PATH);
				
					::CreateProcess(NULL, pg , NULL, NULL, FALSE, 
						NORMAL_PRIORITY_CLASS, NULL, NULL, &si, &pi) ;

					break;
				  }

			default:
				break;
			}
			break;
		}

	case SIMCONNECT_RECV_ID_QUIT:
		{
			quit = 1;
			break;
		}

	default:
		printf("Received ID: %d", pData->dwID);
		break;
	}
}

int __stdcall DLLStart(void)
{
	HRESULT hr;
	// Place all initialization code for the client in this function
	if (SUCCEEDED(SimConnect_Open(&hSimConnect, "StartModules", NULL, 0, 0, 0)))
	{
		// Create some private events
		hr = SimConnect_MapClientEventToSimEvent(hSimConnect, EVENT_MENU_START);
		hr = SimConnect_MapClientEventToSimEvent(hSimConnect, EVENT_SUBMENU_START); 		
		hr = SimConnect_MapClientEventToSimEvent(hSimConnect, EVENT_SUBMENU1_START);

		hr = SimConnect_MenuAddItem(hSimConnect, "CPS", EVENT_MENU_START, 12345);
		hr = SimConnect_MenuAddSubItem(hSimConnect, EVENT_MENU_START, "FUEL MANAGEMENT",EVENT_SUBMENU_START, 234567);
        hr = SimConnect_MenuAddSubItem(hSimConnect, EVENT_MENU_START, "DESCENT CALCULATOR",EVENT_SUBMENU1_START, 345678);

		// Sign up for the notifications
		hr = SimConnect_AddClientEventToNotificationGroup(hSimConnect, GROUP_MENU, EVENT_MENU_START);

		hr = SimConnect_SetNotificationGroupPriority(hSimConnect, GROUP_MENU, SIMCONNECT_GROUP_PRIORITY_HIGHEST);
		SimConnect_CallDispatch(hSimConnect, MyDispatchProcMI, NULL);
	}
	return 0;
}

//
// The DLLStop function must be present.
//
void __stdcall DLLStop(void)
{
	// Close the client
	if (hSimConnect != NULL)
		HRESULT hr = SimConnect_Close(hSimConnect);
}

Could you, please tell me what I did wrong?

Thanks so much
Pierre

 

[mgh]

you need to give strcpy() the full name of the file, including its path otherwise fopen() can't find it.

 

[Pierre95]

Thanks for help Mgh,

The problem is the dll is in the same folder than the XCPS1.dat and XCPS2.dat folder (FSX main folder) which may be variable depending of the user settings.

How can I manage this path?

Best Regards
Pierre

 

[ddawson]

Thanks for help Mgh,
The problem is the dll is in the same folder than the XCPS1.dat and XCPS2.dat folder (FSX main folder) which may be variable depending of the user settings.
How can I manage this path?
Best Regards
Pierre

You can use these functions:
GetModuleFileName
http://msdn.microsoft.com/en-us/library/windows/desktop/ms683197(v=vs.85).aspx

PathRemoveFileSpec
http://msdn.microsoft.com/en-us/library/windows/desktop/bb773748(v=vs.85).aspx

If you provide a null handle to GetModuleFileName, it will return the fully qualified path to the FSX.EXE file. You can then use PathRemoveFileSpec to remove "fsx.exe" from that path to get just the path name.

Doug

 

[ddawson]

Pierre,

Keep in mind that almost every Windows API function returns a value. It is good practice to check this value. When things aren't working as you expect, it is usually the first thing you should review.
Also, have a look on MSDN at the GetLastError function. If the return value for your Windows API has indicated a failure, you can usually get more useful information by calling GetLastError.

Doug

 

[mgh]

I suggest you put a breakpoint in your application when you are developing on the line ::CreateProcess(... to check that values you are getting for ExeFileName and pg are what you expect.

 

[Pierre95]

Thanks so much to you both Doug and Mgh,

I'll try you tip immediately and back to inform you.

Best Regards
Pierre

 

[Pierre95]

Hello,

I'm back with unsuccessful result.

Here is my last code:

// CPSModulesStartDll.cpp*: définit les fonctions exportées pour l'application DLL.
//
#define _CRT_SECURE_NO_WARNINGS
#include <windows.h>
#include <tchar.h>
#include <stdio.h>
#include <Shlobj.h>
#include <string.h>
#include "SimConnect.h"
#include <wchar.h>
#include <WinBase.h>



static enum GROUP_ID {
	GROUP_MENU
};

static enum EVENT_ID {
	EVENT_MENU_START,
 	EVENT_SUBMENU_START,
    EVENT_SUBMENU1_START
};


FILE *fp;
char ExeFileName[MAX_PATH + 1];
char FileName[MAX_PATH + 1];
char ch;
int c = 0;
wchar_t pg[MAX_PATH];


HANDLE  hSimConnect = NULL;
static int quit = 0 ;


void CALLBACK MyDispatchProcMI(SIMCONNECT_RECV* pData, DWORD cbData, void *pContext)
{
	//HRESULT hr;
	switch(pData->dwID)
	{
	case SIMCONNECT_RECV_ID_EVENT:
		{
			SIMCONNECT_RECV_EVENT *evt = (SIMCONNECT_RECV_EVENT*)pData;

			switch(evt->uEventID)
			{
			case EVENT_SUBMENU_START:
				{
					STARTUPINFO si = { 0 };
					si.cb = sizeof(si);
					si.dwFlags = STARTF_USESHOWWINDOW;
					si.wShowWindow = SW_SHOWNORMAL  ;

					PROCESS_INFORMATION pi = { 0 };

					strcpy(FileName, "XCPS1.dat"); // Contains: d:\Program Files (x86)\Concorde Performance System\CFM.exe
					fp = fopen(FileName, "r");
					while ((ch = fgetc(fp)) != EOF)
					{
						ExeFileName[c] =ch;
						++c;
					}
					fclose(fp);
					
					ExeFileName[c] = '\0';
					[COLOR="DarkOrange"]DWORD Path = ::GetModuleFileNameA(nullptr,ExeFileName,sizeof(ExeFileName));
					MultiByteToWideChar(CP_ACP, 0, Path + ExeFileName, -1, pg, MAX_PATH);[/COLOR]
																
					::CreateProcess(NULL, pg , NULL, NULL, FALSE, 
						NORMAL_PRIORITY_CLASS, NULL, NULL, &si, &pi) ;

					break;
				}
              case EVENT_SUBMENU1_START:
				  {
					  STARTUPINFO si = { 0 };
					si.cb = sizeof(si);
					si.dwFlags = STARTF_USESHOWWINDOW;
					si.wShowWindow = SW_SHOWNORMAL  ;

					PROCESS_INFORMATION pi = { 0 };
	

					strcpy(FileName, "XCPS2.dat"); //Contains: d:\Program Files (x86)\Concorde Performance System\CDC.exe
					fp = fopen(FileName, "r");
					while ((ch = fgetc(fp)) != EOF)
					{
						ExeFileName[c] =ch;
						++c;
					}
					fclose(fp);
					ExeFileName[c] = '\0';
					[COLOR="DarkOrange"]DWORD Path = ::GetModuleFileNameA(nullptr,ExeFileName,sizeof(ExeFileName));
					MultiByteToWideChar(CP_ACP, 0, Path + ExeFileName, -1, pg, MAX_PATH);[/COLOR]
				
					::CreateProcess(NULL, pg , NULL, NULL, FALSE, 
						NORMAL_PRIORITY_CLASS, NULL, NULL, &si, &pi) ;

					break;
				  }

			default:
				break;
			}
			break;
		}

	case SIMCONNECT_RECV_ID_QUIT:
		{
			quit = 1;
			break;
		}

	default:
		printf("Received ID: %d", pData->dwID);
		break;
	}
}

int __stdcall DLLStart(void)
{
	HRESULT hr;
	// Place all initialization code for the client in this function
	if (SUCCEEDED(SimConnect_Open(&hSimConnect, "StartModules", NULL, 0, 0, 0)))
	{
		// Create some private events
		hr = SimConnect_MapClientEventToSimEvent(hSimConnect, EVENT_MENU_START);
		hr = SimConnect_MapClientEventToSimEvent(hSimConnect, EVENT_SUBMENU_START); 		
		hr = SimConnect_MapClientEventToSimEvent(hSimConnect, EVENT_SUBMENU1_START);

		hr = SimConnect_MenuAddItem(hSimConnect, "CPS", EVENT_MENU_START, 12345);
		hr = SimConnect_MenuAddSubItem(hSimConnect, EVENT_MENU_START, "FUEL MANAGEMENT",EVENT_SUBMENU_START, 234567);
        hr = SimConnect_MenuAddSubItem(hSimConnect, EVENT_MENU_START, "DESCENT CALCULATOR",EVENT_SUBMENU1_START, 345678);

		// Sign up for the notifications
		hr = SimConnect_AddClientEventToNotificationGroup(hSimConnect, GROUP_MENU, EVENT_MENU_START);

		hr = SimConnect_SetNotificationGroupPriority(hSimConnect, GROUP_MENU, SIMCONNECT_GROUP_PRIORITY_HIGHEST);
		SimConnect_CallDispatch(hSimConnect, MyDispatchProcMI, NULL);
	}
	return 0;
}

//
// The DLLStop function must be present.
//
void __stdcall DLLStop(void)
{
	// Close the client
	if (hSimConnect != NULL)
		HRESULT hr = SimConnect_Close(hSimConnect);
}

The main problem is I don't know how to debug the dll. (FSX being the .exe)

Could you help me please?

Thanks

Best Regards
Pierre