C / C++ / MFC

18-Dec-11 0:37

Hi! I would like to put a file in the clipboard like when you click on a file and you copy, how can I do that?
I tried in c++ with setclipboarddata() with filename (49158) and filenameW (49159) format but doesn't work, inside the clipboard there are some other formats that I don't know. The complete list of the format is:
49161, 49268, 15, 49349, 49340, 49158, 49159, 49171.

Richard MacCutchan18-Dec-11 1:19

18-Dec-11 1:19

I've no idea what all these numbers are supposed to mean, but I would suggest you copy the path of the file into the clipboard rather than its content. Perhaps if you show the actual code you are trying to use, someone can help you.

Unrequited desire is character building. OriginalGriff
I'm sitting here giving you a standing ovation - Len Goodman

Member 820281618-Dec-11 1:54

18-Dec-11 1:54

Ok, thank you, actually to put in the clipboard the path is what I want to do, not the content of the file, in other word I want to do the same thing that you do on windows when you select a file and click on copy.

The code:
(filename format 49158)

char path[]="C:\\file.txt";
int size=strlen(path)+1;
hglbDato = GlobalAlloc(GMEM_MOVEABLE,size);
PVOID pv = (PVOID) GlobalLock(hglbDato);
memcpy(pv,path,size);
GlobalUnlock(hglbDato);
SetClipboardData(49158,hglbDato);

and I do the same for format filenameW (49159) but instead to use a char array I use a wchar array and wcslen() instead of strlen(). Obviously the file.txt exists.

Richard MacCutchan18-Dec-11 4:28

18-Dec-11 4:28

What is this number 49158 about and where does it come from? The valid values for this parameter are as described here[^].

Unrequited desire is character building. OriginalGriff
I'm sitting here giving you a standing ovation - Len Goodman

Member 820281618-Dec-11 5:35

18-Dec-11 5:35

From the file manager I select a file and I copy it in the clipboard than I debug this code and that numbers are the values in the variable format. This code open the clipboard and load every clipboard's format in a list.

////
struct formato{
	UINT tipo;
	int dim;
	char * dato;
};
////

listFormati.erase(listFormati.begin(),listFormati.end());  
			
if(!OpenClipboard(hWnd))
	MessageBox(hWnd,_T("OpenClipboard"),_T("Error"),MB_OK);
				
//numbers of format in the clipboard
unsigned int countFormat= CountClipboardFormats();
UINT format=0;

//for every format in the clipboard
for(int i=0;i<countFormat;i++){
	//extract the next clipboard's format
	format=EnumClipboardFormats(format);
					
	HGLOBAL hglb;
			
	//get from the clipboard the format
	hglb = GetClipboardData(format);
	int szhglb;

	//size of the HGLOBAL
	szhglb = GlobalSize(hglb);

	//format list element
	struct formato *f = (struct formato *)malloc(sizeof(formato));

	if(hglb != NULL)
	{
		//Lock of global object
		PVOID pvoid = (PVOID) GlobalLock(hglb);

		//Allocation and copy of the format's data
		char *ft = (char *)malloc(szhglb);
		memcpy(ft,pvoid,szhglb);

		//Initialization of the format list element
		f->dim=szhglb;
		f->tipo=format;
		f->dato=ft;

		//Insert in the format list the new format
		listFormati.push_back(f);

		//Unlock sul global object
		GlobalUnlock(hglb);
	}		  
	else
	{
	//Allocation error
		MessageBox(hWnd,_T("hglb==NULL"),_T("Error"),MB_OK);
	}			
}
CloseClipboard();

Richard MacCutchan18-Dec-11 6:01

18-Dec-11 6:01

Those values are used by the FileManager as Registered formats so are not necessarily available for user programs. You should use the standard formats in your own program. unless you have details of the actual content stored by such a format.

Unrequited desire is character building. OriginalGriff
I'm sitting here giving you a standing ovation - Len Goodman

Member 820281618-Dec-11 7:00

18-Dec-11 7:00

With debug I discover that 49158 is the char path of the file while 49159 wchar path. I tried also save all the formats in my list than to erase the clipboard and reload the formats that I stored in the list and I discover that the formats 49158 and 49159 are not necessary to paste the file (it also works without them). My problem is to understand what format to put in the clipboard to do the same work that the file manager does. Other interesting thing I'm trying it on a virtual machine and seems that when you restart the IDE or maybe the os, there are same format that changes their number idetification of the format while others (49158, 49159 ,etc) have the same number.

Richard MacCutchan18-Dec-11 9:56

Simulated press ctrl+c (copy button) any where in any window

18-Dec-11 9:56

Just use the standard CF_ values as defined in the link I gave you earlier.

Unrequited desire is character building. OriginalGriff
I'm sitting here giving you a standing ovation - Len Goodman

mmda17-Dec-11 4:23

mmda

17-Dec-11 4:23

Hi, I am Asking WHY?
I have a big problem when i want use this command from API:
Wink | ;)

<big>SendMessage( hFocusWin, WM_COPY, 0, 0 );</big>
its don't work correct any where.
i define a hot key (Ctrl +q) that work correctly.
but it sometimes return highlighted (selected) text and some times it doesn't work.
for example it return correct selected text in Firefox browser and doesn't work correctly in Google chrome .
why ?

Re: Simulated press ctrl+c (copy button) any where in any window

Code-o-mat17-Dec-11 8:40

Code-o-mat

17-Dec-11 8:40

As the documentation[^] states:

Quote:
An application sends the WM_COPY message to an edit control or combo box to copy the current selection to the clipboard in CF_TEXT format.

So if your target uses a standard edit control (or combo) or something derived from it, WM_COPY will probably work, however, if what you are targeting is something like a custom control that does not implement WM_COPY then it will not work.

> The problem with computers is that they do what you tell them to do and not what you want them to do. <
> If it doesn't matter, it's antimatter.<

An Easy Question

rahul.kulshreshtha16-Dec-11 21:56

rahul.kulshreshtha

16-Dec-11 21:56

In Release mode with VS2008,
Why "var" prints "Whats up" instead of "newval"
It crashes in debug mode. I guess the reason might be the auto-memory allocation is "read-only". If I use char *var = new char[15] then it works fine.

XML

#include <stdio.h>
#include <conio.h>
#include <string>

int main()
{
    char *var = "\nWhats Up";
    strcpy(var, "newval");
    printf(var);
    getch();
    return 0;
}

Richard MacCutchan16-Dec-11 22:57

16-Dec-11 22:57

When you create var in this way it is pointing to a constant string so your strcpy() command is not allowed. What you should code is:

C++

    char *var = "\nWhats Up";
    var = "newval";
// or
    char var[] = "\nWhats Up";
    strcpy(var, "newval");

although in the second case you could easily overwrite the buffer if you are not careful.

Unrequited desire is character building. OriginalGriff
I'm sitting here giving you a standing ovation - Len Goodman

rahul.kulshreshtha17-Dec-11 2:53

rahul.kulshreshtha

17-Dec-11 2:53

Thanks,
I got it

CPallini17-Dec-11 9:35

CPallini

17-Dec-11 9:35

Richard MacCutchan wrote:
although in the second case you could easily overwrite the buffer if you are not careful.

Did you mean overrun, didn't you?

BTW: Good answer, my 5.

Richard MacCutchan17-Dec-11 21:14