C / C++ / MFC

How to get a view the size of a formview?

16-Nov-02 11:12

The taskbar is an example of an "App Bar". Take a look at SHAppBarMessage in the MSDN. It provides all you need to create your own.

Chris Richardson

Programmers find all sorts of ingenious ways to screw ourselves over. - Tim Smith

Mario M16-Nov-02 10:19

Mario M

16-Nov-02 10:19

I need a view get the size of a formview, not the form size to the view.
I know the second option is using RecalcLayout and ResizeParentToFit, and the first option how?

Thanks.

Desktop

Megan Forbes16-Nov-02 9:01

Megan Forbes

16-Nov-02 9:01

Hi
I was wondering about the desktop and settings for it. I haven't really played about with things like this before, so maybe some of you who have could point me in the right direction?

I was thinking that it would be kind of cool to have a script that runs on startup to change the desktop background randomly, based on pictures in a particular folder. Is this silly / impossible, or is it a simple concept that I should have learned at the same time as learning to semi-colon and somehow missed out on?

Thanks for any ideas / pointers in the right direction.

ps. I would like to write the script myself, rather than download an exe utility. Thanks! Smile | :)

I knew it would end badly when I first met Chris in a Canberra alleyway and he said 'try some - it won't hurt you'.....
- Christian Graus on Code Project outages

Ravi Bhavnani16-Nov-02 9:24

Ravi Bhavnani

16-Nov-02 9:24

This is reasonably easy to do using SystemParametersInfo(). Specifically, see SPI_SETDESKPATTERN and SPI_SETDESKWALLPAPER.

/ravi

Let's put "civil" back in "civilization"
http://www.ravib.com
ravib@ravib.com

Megan Forbes16-Nov-02 11:19

Megan Forbes

16-Nov-02 11:19

Thanks - looking forward to getting it working Smile | :)

I knew it would end badly when I first met Chris in a Canberra alleyway and he said 'try some - it won't hurt you'.....
- Christian Graus on Code Project outages

ian mariano16-Nov-02 9:26

ian mariano

16-Nov-02 9:26

One way is Using the Active Desktop Object[^] and it's SetWallpaper()[^] method.

Or read this nifty article: Ask Dr. GUI #51[^]. The first question is about changing the desktop wallpaper.

"The greatest danger to humanity is humanity without an open mind."
- Ian Mariano - http://www.ian-space.com/

Megan Forbes16-Nov-02 11:15

Megan Forbes

16-Nov-02 11:15

Thanks!

I knew it would end badly when I first met Chris in a Canberra alleyway and he said 'try some - it won't hurt you'.....
- Christian Graus on Code Project outages

Console Hook

Selevercin16-Nov-02 8:55

16-Nov-02 8:55

Is it possible to create a hook for a MS DOS program? I wish to hook NT's net.send function that you can use under CMD (I assume it stands for command).

For those who are wondering, I wish to block out which computer sends the message. My school frowns on sending messages, and I wish for a little more impunity!

Thanks,

~ Selevercin

If you have a problem with my spelling, just remember that's not my fault. I [as well as everyone
else who learned to spell after 1976] blame it on
Robert A. Kolpek for U.S. Patent 4,136,395.

Chris Richardson16-Nov-02 11:19

16-Nov-02 11:19

There is a way to hook API calls for all processes in the system. You must first write a DLL and get it loaded (possible using a global message hook) in all processes. Then, it's possible to hook functions using APIHijack, which can be found I think here on CodeProject. The function you will want to hook is called NetMessageBufferSend, located in NetApi32.dll, which is what the "net send" command uses I'm sure.

Chris Richardson

Programmers find all sorts of ingenious ways to screw ourselves over. - Tim Smith

Chris Richardson16-Nov-02 11:28

16-Nov-02 11:28

Or maybe it would be easier just to write your own program which would call NetMessageBufferSend, and pass some bogus name for the "fromname" parameter.

Chris Richardson

Programmers find all sorts of ingenious ways to screw ourselves over. - Tim Smith

Selevercin16-Nov-02 12:44

16-Nov-02 12:44

Cool, I didn't know about that function Smile | :)

Works for me! Do you know what the parameter ServerName needs? An IP address? Also, what is Msgname? I assume the par. buf is the actual message.

Thanks VERY much,

~ Selevercin

If you have a problem with my spelling, just remember that's not my fault. I [as well as everyone
else who learned to spell after 1976] blame it on
Robert A. Kolpek for U.S. Patent 4,136,395.

Chris Richardson18-Nov-02 6:59

18-Nov-02 6:59

Unless you want the function to execute on some other machine (which the ServerName would be the name or IP address of), you can pass NULL for the ServerName parameter. Indeed, the parameter buf is the message.

Selevercin wrote:
Thanks VERY much

No problem Smile | :)

Chris Richardson

Programmers find all sorts of ingenious ways to screw ourselves over. - Tim Smith

Selevercin18-Nov-02 10:46

18-Nov-02 10:46

Sorry, but one last question. For the second parameter (Send To) it wants a constant unsigned short pointer. I have no idea what to do for this. I feel like I should put in a string with the computer name of which I'm sending to. Any ideas?

Thanks again,

~ Selevercin

If you have a problem with my spelling, just remember that's not my fault. I [as well as everyone
else who learned to spell after 1976] blame it on
Robert A. Kolpek for U.S. Patent 4,136,395.

Chris Richardson18-Nov-02 10:52

18-Nov-02 10:52

It's a wide character string specifying either the name of the computer to send to, or the IP address of the computer to send to. So, you could do something like this to send it to IP address 127.0.0.1 (your own computer):

NetMessageBufferSend( NULL,
                      L"127.0.0.1",
                      L"Bogus FromName",
                      (BYTE*)L"123",
                      6 );

The L character in front of the strings specifies that you want the string to be a wide character string. Note that the example isn't a real world example, it's just meant to show the simplest way to do it.

Chris Richardson

Programmers find all sorts of ingenious ways to screw ourselves over. - Tim Smith

Selevercin18-Nov-02 11:51

18-Nov-02 11:51

Ok, first let me appologize for being stupid. I can't figure out how to get an edit box to input wide characters. Do I need to start out as a string, then convert it to wide characters?

Thanks, again I appologize for being stupid,

~ Selevercin

If you have a problem with my spelling, just remember that's not my fault. I [as well as everyone
else who learned to spell after 1976] blame it on
Robert A. Kolpek for U.S. Patent 4,136,395.

Chris Richardson18-Nov-02 12:01

18-Nov-02 12:01

I edited this because it wasn't entirely accurate...

You don't have to apologize. Here's a sample of how to convert from a "TCHAR" string that the CString uses (which can be char or wchar_t), like you can get from the edit control, to a "whar_t" string, like the NetMessageBufferSend function expects:

// This would be the text we got from the edit:
CString a_sThisCameFromTheEditControl = "127.0.0.1";
// This will be the text we pass to NetMessageBufferSend.
wchar_t a_uszWillBePassedToTheFunction[128] = {0};

// Convert the text from char to wchar_t
MultiByteToWideChar( CP_ACP, 0, a_sThisCameFromTheEditControl, -1, a_uszWillBePassedToTheFunction, sizeof( a_uszWillBePassedToTheFunction ) );

I'm not sure what will happen if you do a UNICODE build of your application though...

Chris Richardson

Programmers find all sorts of ingenious ways to screw ourselves over. - Tim Smith

Selevercin18-Nov-02 13:05