C / C++ / MFC Discussion Boards

Ehsan Baghaki5-Jan-03 23:36

5-Jan-03 23:36

hi to draw a String with GDI+ :

graphics.DrawString(L"Hello", -1, &font, PointF(600,100), &solidBrush);

how can i change an integer to WCHAR in parameter 1.
for exmple i want to draw figures from 1 to 100.

thanx

Re: Drawing an Integer !!

roel_5-Jan-03 23:53

roel_

5-Jan-03 23:53

char tmp[4];
for(int i = 1 ; i < 100 ; i++) {
sprintf(tmp, "%s", i);
graphics.DrawString(tmp, -1, &font, PointF(600,100), &solidBrush);
}

You can also use eg std::string and boost::lexical_cast, but this is the simplest form I guess

HTH

Typo

Ted Ferenc6-Jan-03 4:41

Ted Ferenc

6-Jan-03 4:41

roel_v wrote:
sprintf(tmp, "%s", i);

You obviously meant:-

sprintf(tmp, "%d", i);

Re: Typo

roel_6-Jan-03 4:56

roel_

6-Jan-03 4:56

Yes I did - shame on me WTF | :WTF:

Re: Drawing an Integer !!

eXplodus6-Jan-03 0:18

eXplodus

6-Jan-03 0:18

looks like that u wanna use unicode

CString blub;

for (int i=0;i<100;i++)
{
blub.Format(L"%i",i);
graphics.DrawString(blub, -1, &font, PointF(600,100), &solidBrush);
}

...

Hiding from taskbar

Mazdak5-Jan-03 23:32

Mazdak

5-Jan-03 23:32

When my application run it is shown in Taskbar,how can I prevent it?I want to use systemtray icon instead of it.I know how to show it in systray,but I don't know how to hide it from taskbar.

Mazy

"And the carpet needs a haircut, and the spotlight looks like a prison break
And the telephone's out of cigarettes, and the balcony is on the make
And the piano has been drinking, the piano has been drinking...not me...not me-Tom Waits

Re: Hiding from taskbar

Kannan Kalyanaraman6-Jan-03 0:31

Kannan Kalyanaraman

6-Jan-03 0:31

this[^] should help you.

Cheers
Kannan

Re: Hiding from taskbar

Mazdak6-Jan-03 1:49

Mazdak

6-Jan-03 1:49

Thanks.

Mazy

"And the carpet needs a haircut, and the spotlight looks like a prison break
And the telephone's out of cigarettes, and the balcony is on the make
And the piano has been drinking, the piano has been drinking...not me...not me-Tom Waits

Obtaining process handle

Shah Shehpori5-Jan-03 23:27

Shah Shehpori

5-Jan-03 23:27

How can i obtain the process handle of any process under execution ??? Actually, i am writing an application that can terminate any process. For this purpose i am using API TerminateProcess():

BOOL TerminateProcess(<br />
  HANDLE hProcess,<br />
  UINT uExitCode<br />
)

As can be seen from the syntax, the first argument is the process handle. How can i obtain this handle when i only know is the process name ???? Is there any other alternative you suggest me instead of TerminateProcess() ???

Re: Obtaining process handle

Kannan Kalyanaraman6-Jan-03 0:43

Kannan Kalyanaraman

6-Jan-03 0:43

For this you need to look on the following API's
CreateToolhelp32Snapshot for a snapshot of running process on your machine and on successful exec. of this function you need to iterate the processes using Process32First followed by Process32Next.
Also look at the following API's in MSDN

GetProcessModule
OpenProcess

HTH

Cheers
Kannan

Multiple file types

S O S5-Jan-03 23:08

S O S

5-Jan-03 23:08

Is it possible to have an MFC document template be able to open multiple file types?
(whatever.bla and whatever.beh for example)

Re: Multiple file types

Iain Clarke, Warrior Programmer5-Jan-03 23:32

Iain Clarke, Warrior Programmer

5-Jan-03 23:32

You have to manually edit the IDR_XXXXTYPE string in the resource file to add your file types to the
File Open box.

If you search MFC for a function called
CDocTemplate::Confidence CDocTemplate::MatchDocType(LPCTSTR lpszPathName, CDocument*& rpDocMatch)
{

}

It will show how MFC chooses which template to use for any given file type. You can inherit from
C(Multi/Single)DocTemplate, and override this function to do clever "type choosing things".

You'll have to remember to trivially override the construction member as well...

As before, I hope this gives you pointers...

Iain.

Re: Multiple file types

S O S6-Jan-03 1:29

S O S

6-Jan-03 1:29

Thanks, but what do I put in the string? I tried doing it like normal open file dialogs, but |s didn't work and I don't know what else to try...

Re: Multiple file types

uandrej6-Jan-03 3:31

uandrej

6-Jan-03 3:31

What string? You mean the lpszPathName or what?

Re: Multiple file types

Iain Clarke, Warrior Programmer6-Jan-03 4:58

Iain Clarke, Warrior Programmer

6-Jan-03 4:58

I may have been misleading you... I misremembered how I did the project I thought I had this
feature in. The string I meant was as follows:

// Normal
JigSaw\n\nJigSaw\nJigsaw Image (*.jig)\n.jig\nJigSaw.Document\nJigSaw Document

// Edited...
JigSaw\n\nJigSaw\nJigsaw Image (*.jig;*.jpg)\n.jig;.jpg\nJigSaw.Document\nJigSaw Document
OR
JigSaw\n\nJigSaw\nJigsaw Image (*.jig;*.jpg)\n.jig;*.jpg\nJigSaw.Document\nJigSaw Document

If those two possibilities don't work, then you'll have to use the OpenFileName function
yourself by over-riding the CWinApp::OnFileOpen () function.

Loosely, and with a lot or error correction cut out:

void CZeusApp::OnFileOpen()
{
    CFileDialog fDlg (TRUE, "JIG", NULL, 0, "Jigsaw Image (*.jig;*.jpg)|mdf;*.dat|All files|*.*||", AfxGetMainWnd ())

    if (fDlg.DoModal () != IDOK)
        return;

    OpenDocumentFile (fDlg.GetPathName ());
}

This wouldn't handle multiple files etc, but it will give you a start.

Iain.

tcp api calls

Prince Manatt5-Jan-03 22:57

Prince Manatt

5-Jan-03 22:57

Respected sir/madam
my problem is how to call the api's viz
GetTcpTable & SetTcpEntry???
These are available in the dll file "iphlpapi.dll" but when i include the header file iphlpapi.h it is showing two errors as follows
1) unknown pragma #pragma option
2) cannot include header file iptypes.h

i also tried loading the dll using LoadLibrary & invoke the above told functions using the GetProocAddres function.
But this shows assertion failure....

so kindly do tell me how to invoke those functions...
prince

Re: tcp api calls

viliam6-Jan-03 3:09

viliam

6-Jan-03 3:09

I don't know what's wrong with header file.

About DLL:
Make sore that function poiters are CALLBACK as:

typedef void (CALLBACK* SomeName)(BOOL, and so on..)

viliam

Custom resources

S O S5-Jan-03 22:43

S O S

5-Jan-03 22:43

How can I use a custom resource in the program?
I added a resource that I need to use as plain binary data, but can't seem to find a function to do it.

Winsock related

Kamran Jamal5-Jan-03 22:40

Kamran Jamal

5-Jan-03 22:40

My server application may freeze and stops responding. So a second application continuously monitors it after every few minutes. If second application is unable to get a response from the server application, it assumes that the server is dead and then need to take control of the port and itself start listening for a temporary period.

Is it possible that the second app start listening on a port already bind to the previous app ??? If yes, then how ??

Re: Winsock related

Stefan Pedersen6-Jan-03 3:41

Stefan Pedersen

6-Jan-03 3:41

Nope.
A port has to be released before you can bind to it again.
If you manage to kill the other process and then wait for the
"port shutdown timeout" (forgot what's actually called) then you
can reuse the port.

"You can stand all night at a redlight anywhere in town, hailing Marys left and right but none of them slow down. I've seen the best of men go past. I don't wanna be the last..."

API for determining the file system on system disk

abhinarulkar5-Jan-03 22:26

abhinarulkar

5-Jan-03 22:26

Hi All,
I need to know a way to programmatically know how we can determine the file system on the system disk. Is there any API available which can be used to determine the file system.
Thanks and regards,
Abhishek.

Learning is a never ending process of Life.

Re: API for determining the file system on system disk

Michael Dunn5-Jan-03 22:28

Michael Dunn

5-Jan-03 22:28

Call GetVolumeInformation() - one of the things it returns is the name of the file system.

--Mike--
When 900 years old you reach, look as good you will not. Hmm.
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Statusbar updating

S O S5-Jan-03 22:23

S O S

5-Jan-03 22:23

Is there a better way to updating the first pane in a MFC statusbar than just calling it's SetPaneText function when you want it changed? An UI update handler somehow?

And when exactly does MFC change it to "For help, press F1" and is it possible to change that?

Re: Statusbar updating

Iain Clarke, Warrior Programmer5-Jan-03 22:41

Iain Clarke, Warrior Programmer

5-Jan-03 22:41

If you look in tech note 27 in the Visual C++ 6 docs, it talks about WM_SETMESSAGESTRING, which is a
MFC defined message sent to the CFrameWnd. In 99% of cases, this will be CMainFrame. The handle for
this message then tells the status bar what to display. You could simply send this message yourself.

As for your second question, CFrameWnd has a handler for the WM_MENUSELECT to get the current menu
item, and extract the text from the string table.

I hope that gave you some pointers,

Iain.

A virtual keyboard

Nyrup5-Jan-03 22:17

Nyrup

5-Jan-03 22:17

Hi,
When a Win2K or XP computer waits for you to press Ctrl+Alt+Del to log on, Windows displays a virtual keyboard if you press another button.

Is it possible to display this keyboard in my own app?

Best regards
/Nyrup

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.