C / C++ / MFC

Mark Salsbery8-Nov-08 13:43

8-Nov-08 13:43

Not all verbs are available to all files and folders.

As the docs state:

"Generally, the actions available from an object's shortcut
menu are available verbs."

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Joseph Marzbani8-Nov-08 16:56

8-Nov-08 16:56

Yes I know! But the verbs Rename, Delete and Properties are common to all objectes. Aren't they? Confused | :confused:

toxcct9-Nov-08 2:53

toxcct

9-Nov-08 2:53

if you want to delete/rename a file, why don't you use the dedicated API ?

[VisualCalc][Binary Guide][CommDialogs] | [Forums Guidelines]

Mark Salsbery9-Nov-08 6:10

Get the lparam of a SETTEXT hook message

9-Nov-08 6:10

I poked around my registry and tried a bunch of right-clicks
on files of different types...I couldn't find any type that supported
any of those.

Mark

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

ignacio rivera8-Nov-08 8:00

ignacio rivera

8-Nov-08 8:00

The next question is about catching all the SETTEXT message that are sent to a specific window:

I'm trying to hook all the settext messages that are sent to a specific window. The hook works almost perfectly, it intercepts all the settext messages and gets de windows handle stored in the pwp structure. pwp is a CWPRETSTRUCT type structure that contains the information of the SETTEXT hooked message.
The problem is that I can't get the text(caption) send to the window stored in the LPARAM of the settext hooked message (pwp->lParam. I only get garbage).
The idea is to get the text send to the window and save it to a file.
Im using a CallWndRetProc hook.

Here is my code.

LRESULT CALLBACK CallWndRetProc(int nCode, WPARAM wParam, LPARAM lParam)
{
TCHAR *a;
FILE *f1;
if(nCode < 0)
{
return CallNextHookEx(hook, nCode, wParam, lParam);
}
if (nCode == HC_ACTION)
{
CWPRETSTRUCT* pwp = (CWPRETSTRUCT*)lParam;
UINT message = pwp->message;
if (message == WM_SETTEXT)
{
unsigned int whandle = (unsigned int) pwp->hwnd;

// globalvar contains the
// (unsigned int)window's handle I want to catch.
if (whandle == globalvar)
{
LPARAM l = pwp->lParam;

// The problem is on the next line.
// Var a only gets garbage.
a = (TCHAR *) l
f1=fopen("c:\\hook.txt","a+");
fprintf(f1,"%d %s\n", whandle, a);
fclose(f1);
}
}
}
return CallNextHookEx(hook, nCode, wParam, lParam);
}

Ignacio Rivera
Mexico

Re: Get the lparam of a SETTEXT hook message

AtomAnt10-Nov-08 8:08

AtomAnt

10-Nov-08 8:08

Could it be possible that the WM_SETTEXT you get has been "POSTED" and the buffer lParam contains a pointer at has been destroyed by the time you get the hook-call?

AtomAnt

How to Display a SDI Application Started with main window hidden

vikrant kpr8-Nov-08 7:09

vikrant kpr

8-Nov-08 7:09

Hey Friends

I need to start an SDI Application (CFormView Based) Hidden

I do not want it to display main window first & then i cann showwindow(sw_hide)

In VC++ 6.0

I could do

....
AddDocTemplate(pDocTemplate);
m_nCmdShow =SW_HIDE;
...

but now in VS 2008
it does not works

Any clue?

Re: How to Display a SDI Application Started with main window hidden

Mark Salsbery8-Nov-08 8:07

Re: How to Display a SDI Application Started with main window hidden

8-Nov-08 8:07

Don't use the WS_VISIBLE style when creating the window?

Mark

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

vikrant kpr8-Nov-08 8:18

vikrant kpr

8-Nov-08 8:18

Thanks

will try

it is a single document interface type application

so will try with CMainFrame & CMyFormView

How can I compress (zip) a file using pure win32/64 API or plain "C++"?

Joseph Marzbani8-Nov-08 6:09

Re: How can I compress (zip) a file using pure win32/64 API or plain "C++"?

8-Nov-08 6:09

I need to compress a file programmatically without using any third party APPs but pure Win32/64 API or plain "C/C++". any one can help me?

Thank you masters!

CPallini8-Nov-08 6:22

Re: How can I compress (zip) a file using pure win32/64 API or plain "C++"?

8-Nov-08 6:22

Does this page [^] help?
Smile | :)

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke

[My articles]

Joseph Marzbani8-Nov-08 8:00

Re: How can I compress (zip) a file using pure win32/64 API or plain "C++"?

8-Nov-08 8:00

No! Because it has not introduced any function or algorithm, moreover I think it's only about NTFS!

Any way! Thank you my master, CPallini
Rose | [Rose]

CPallini8-Nov-08 9:52

Re: How can I compress (zip) a file using pure win32/64 API or plain "C++"?

8-Nov-08 9:52

Jusef Marzbany wrote:
No! Because it has not introduced any function or algorithm,

please elaborate.

Jusef Marzbany wrote:
I think it's only about NTFS!

The requirements, from the documentation page I posted.

Client	  Requires Windows Vista, Windows XP, or Windows 2000 Professional.
Server	  Requires Windows Server 2008, Windows Server 2003, or Windows 2000 Server.
<pre>

Mark Salsbery8-Nov-08 8:29

Re: How can I compress (zip) a file using pure win32/64 API or plain "C++"?

8-Nov-08 8:29

You'll have to write your own! Smile | :)

If you could use .NET, there's a little help in the
System.IO.Compression Namespace[^]

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Saurabh.Garg8-Nov-08 13:27

Saurabh.Garg

8-Nov-08 13:27

There are several zip utilities, here on CodeProject.

Zip Utils[^]

Lite Zip and Lite UnZip[^]

http://www.codeproject.com/KB/cpp/zipunzip.aspx[^]

XZip and XUnZip[^]

-Saurabh

Re: How can I compress (zip) a file using pure win32/64 API or plain "C++"?

Joseph Marzbani8-Nov-08 17:04

Re: How can I compress (zip) a file using pure win32/64 API or plain "C++"?

8-Nov-08 17:04

Thank you very much Saurabh.Garg. Those are the exact things I needed.
Blush | :O

Thank you just the same. Rose | [Rose]

Thank you masters!

Saurabh.Garg8-Nov-08 18:47

Saurabh.Garg

8-Nov-08 18:47

You are most welcome.

-Saurabh

GetVolumeInformation in a Simple DLL

logicon8-Nov-08 4:32

8-Nov-08 4:32

I am working on a project, in C#. Due to security I decided to put some core services in a C DLL. I followed the example in the link:

How to create a DLL library in C and then use it with C#[^]

Now I want to use GetVolumeInformation in this dll. But I don't have any idea how to call it, what include are required etc.

Can anyone provide me help or link.

Thanks

CPallini8-Nov-08 5:03

8-Nov-08 5:03

logicon wrote:
Now I want to use GetVolumeInformation in this dll. But I don't have any idea how to call it, what include are required etc

I suppose there is some documentation about [^].
Smile | :)

logicon8-Nov-08 5:24

8-Nov-08 5:24

Yes, I already visited that, simple C doesnot have those types. I a, good at C but no experience in Win programming in C

CPallini8-Nov-08 6:14

8-Nov-08 6:14

Well, I bet there is documentation also about those data types [^].

Smile | :)

logicon8-Nov-08 5:35

8-Nov-08 5:35

What I am trying to compile is :

#include <stdio.h>
#include <windows.h>

extern "C"
{
	__declspec(dllexport) void DisplayHelloFromDLL()
	{
		char buffVN[512];
		char buffSN[512];
		char buffMCL[512];
		char buffFSN[512];
		char *v = "C:\\";

		GetVolumeInformation(v, buffVN, 512, buffSN, buffMCL, 0x00000002, buffFSN, 512);

		printf ("Serial Number [%s]\n", buffSN);
		printf ("Hello from DLL !\n");
	}

}
</windows.h></stdio.h>

I am getting error:

error C2664: 'GetVolumeInformationW' : cannot convert parameter 1 from 'char *' to 'LPCWSTR'

Mark Salsbery8-Nov-08 5:56

8-Nov-08 5:56

logicon wrote:
cannot convert parameter 1 from 'char *' to 'LPCWSTR'

You're going to need to get your string types right on the C/C++ side.

The Complete Guide to C++ Strings, Part I - Win32 Character Encodings[^]

I personally use the generic text mappings[^] defined in tchar.h but I see
very little chance that I'll ever need to reuse any of my C++ code for a
non-Unicode build. The 'char' type is a relic Smile | :)

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

logicon8-Nov-08 6:48