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[a343]

Hi,

I'm triying to copy some information to clipboard but I have a problem when I want open the file "temporal.dat". The aplication never open the file. I have other application with the same code and everything run perfectly. Could you help me?

This is my code

void CAdestView::CopiarVariables()
{
	int sel=-1;				// Nos indicara el elemento que esta seleccionado
	CString aux_nomb;		// Almacena el nombre para comparar
	FILE *fichero;			// Nombre del fichero temporal
	int x=0;				// Numero de elementos copiados
	CString nombre_b;		// Nombre temporal de la variable para copiar en el fichero
	CString ausente_b;		// Valor ausente temporal de la variable para copiar en el fichero
	CString etiqueta_b;		// Etiqueta temporal de la variable para copiar en el fichero
	CString labels_b;		// Labels 	char labels_b[30];		// 
	CString datostxt;
	int t=0;

	// Se abre el fichero para escritura
	fichero= fopen("\\temporal.dat","wb");

	// Se obtiene un puntero de la clase view
	CAdestDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);
	if(!fichero)
	{
		MessageBox(_T("No se pudo abrir el fichero"), _T("Error"), 0x10010);
		return;
	}
	// Bucle para determinar el numero de elementos a copiar
	do
	{
		sel = m_Lista.GetNextItem(sel,LVNI_SELECTED);
		aux_nomb=m_Lista.GetItemText(sel,0);
		if (sel!=-1)
			x++;

	}while (sel != -1);	

	// Abro el portapapeles
	if(!OpenClipboard()) 
	{
		MessageBox(_T("No se pudo abrir el portapapeles"), _T("Error"), 0x10010);
		return;
	}
	// Registro el formato Datos Adest
	UINT cf= RegisterClipboardFormat(_T("Variables Adest")); 
	const char *text3 = "";
	HGLOBAL hText = GlobalAlloc(GMEM_MOVEABLE |GMEM_DDESHARE, strlen(text3)+1);
	char *ptr = (char *)GlobalLock(hText);
	strcpy(ptr, text3);
	GlobalUnlock(hText);
	SetClipboardData(cf, hText);
	// Cierro el portapapeles
	CloseClipboard(); 

	// Se situa el puntero del fichero donde apunta el cursor
	fseek(fichero,sizeof(int),SEEK_SET);
	// Se escribe el numero de elementos a copiar
	fwrite(&x,sizeof(int),1,fichero);
	INT_PTR contador=0;
	contador=pDoc->Variables.GetSize();
	// Bucle para copiar todos los elementos seleccionados
	do
	{
		sel = m_Lista.GetNextItem(sel,LVNI_SELECTED);
		aux_nomb = m_Lista.GetItemText(sel,0);
		for (int i=0;i<contador;i++)
		{
			CDatos* pDat = (CDatos*)pDoc->Variables.GetAt(i);
			// El nombre debe coincidir
			if (pDat->Nombre == aux_nomb)
			{

				// Se copia el nombre a la variable temporal del fichero
				nombre_b=pDat->Nombre;
				// Se escribe en el fichero el tamaño
				fwrite(&pDat->Tam,sizeof(int),1,fichero);
				// Se escribe en el fichero el nombre
				fwrite(&nombre_b,sizeof(CString)*30,1,fichero);
				// Se escribe en el fichero el tipo
				fwrite(&pDat->Tipo,sizeof(int),1,fichero);
				// Dependiendo del tipo de variable se escribe en el
				// fichero unos u otros datos
				if(pDat->Tipo==0)
				{
					for(t=0;t<pDat->Tam;t++)
						//Se escriben los datos en el fichero
						fwrite(&pDat->Datos[t],sizeof(double),1,fichero);
				}
				else
				{
					for(t=0;t<pDat->Tam;t++)
					{
						//Se escriben los datos en el fichero
						datostxt=pDat->Dat_Txt[t];
						fwrite(&datostxt,sizeof(CString)*20,1,fichero);
					}
				}

				// Se copia el dato ausente a la variable temporal del fichero
				ausente_b=pDat->Ausente;
				// Se escribe en el fichero el dato ausente
				fwrite(&ausente_b,sizeof(CString)*10,1,fichero);
				// Se escribe en el fichero la escala
				fwrite(&pDat->Escala,sizeof(int),1,fichero);
				// Se copia la etiqueta a la variable temporal del fichero
				etiqueta_b=pDat->Etiqueta;
				// Se escribe en el fichero la etiqueta temporal
				fwrite(&etiqueta_b,sizeof(CString)*100,1,fichero);
				// Se copia las labels a la variable temporal del fichero
				labels_b=pDat->Labels;
				// Se escribe en el fichero las labels temporal
				fwrite(&labels_b,sizeof(CString)*80,1,fichero);
				// Se escribe en el fichero la precision
				fwrite(&pDat->Precision ,sizeof(int),1,fichero);
			}
		}
	}while (sel != -1);	

	// Se cierra el fichero
	fclose(fichero);	
}

[VictorN]

Hi,

I'm triying to copy some information to clipboard but I have a problem when I want open the file "temporal.dat". The aplication never open the file.
...
This is my code

void CAdestView::CopiarVariables()
{
	...
	// Se abre el fichero para escritura
	fichero= fopen("\\temporal.dat","wb");
	...
	// Se cierra el fichero
	fclose(fichero);	
}

You write you "want to open the file "temporal.dat". But in your code you are trying to open the "\\temporal.dat" file!

[a343]

I meant "\\temporal.dat". I'm sorry.

[VictorN]

I meant "\\temporal.dat". I'm sorry.

But does the file \temporal.dat exist?
Try to open (just copy/paste this name) \temporal.dat in Windows explorer or in cmd console...

[a343]

I can't find the file how "\\temporal.dat" or "\temporal.dat" but I look in windows explorer how "temporal.dat" and I find the file in C:\Users\Antonio\AppData\Local\VirtualStore

But in other aplicattion I have the same code with "\\temporal.dat" and everything run perfectly.
What happen?
How I must to edit my code?

[GCDEF]

Why are you putting the slash in front of the file name?

[a343]

Becouse is the direction of this file. That mean that the file is in the unit C: or the unit where is the windows file

[VictorN]

Are you sure it is correct?
Where did you read any info about such a meaning of backslash?

[a343]

I'm not sure, I had this code from other person who did my project before.
If you know other way to do this function, tell me

Maybe it is not like this, but I saw in this web something like that

http://copstone.com/2009/12/abrir-ap...ernas-desde-c/

[Lindley]

Putting a (forward) / before a path indicates it is an absolute path on Linux/Unix. I don't know whether or not \ has a similar meaning on Windows.

[VictorN]

http://copstone.com/2009/12/abrir-aplicaciones-externas-desde-c/[/url]

I don't see anything similar to the file name beginning with backslash in the site you referred to.
If you see - please, post the quote.

[a343]

Now, I put my path, where is the file, "C:\\Users\Antonio\AppData\Local\VirtualStore", but it can't open the file. Why???

[VictorN]

Now, I put my path, where is the file, "C:\\Users\Antonio\AppData\Local\VirtualStore", but it can't open the file. Why???

This path is wrong.
Please, show the exact code snippet where you pass in the path and file name to open the file.

[GCDEF]

Now, I put my path, where is the file, "C:\\Users\Antonio\AppData\Local\VirtualStore", but it can't open the file. Why???

How would we know?? From MSDN "Always check the return value to see if the pointer is NULL before performing any further operations on the file. If an error occurs, the global variableerrno is set and may be used to get specific error information. For further information, see errno."

I think Victor is alluding to the possibility that you're not using escape characters correctly in your string literal.

What does this problem have to do with your thread title?

[a343]

Please read the code of the function, it copies informations to clipboard.

Victor, you are right. But my aplication will run in several computer, and I need some way to put the path in general way not only my path