How to idle the program for seconds? - C / C++ / MFC Discussion Boards

Re: about font in a dialog

Anthony_Yio24-Jun-04 20:15

Anthony_Yio

24-Jun-04 20:15

You can change it in your dialog resource properties.

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how to realize after my login dialog end and follow a image coming out for a while?

vividtang24-Jun-04 12:31

vividtang

24-Jun-04 12:31

i see some program when login dialog end and follow a image that is fit for the application program content coming out for a while,but i dont know how to realize it,please give me some instruction ?thx all

Re: how to realize after my login dialog end and follow a image coming out for a while?

Anthony_Yio24-Jun-04 20:22

Anthony_Yio

24-Jun-04 20:22

I think what you are looking for is a splash screen. Try searching splash screen in codeproject. It is by the way not difficult to write your own.

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if i do not write special class to realize hyperlink,is there a more simpler way to solve it?

vividtang24-Jun-04 12:27

vividtang

24-Jun-04 12:27

in my dialog there is a net address i want to realize hyperlinker when clicking it,if i dont write class specially for it,is there a more simpler way to solve it?

Re: if i do not write special class to realize hyperlink,is there a more simpler way to solve it?

Michael Dunn24-Jun-04 12:36

Michael Dunn

24-Jun-04 12:36

There are hyperlink classes here (I think Chris M. wrote one), or use CHyperLink in WTL.

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in a function can i use ExecuteSQL using the same database connection more than two times not using CRecordset object?

vividtang24-Jun-04 12:23

vividtang

24-Jun-04 12:23

such as :extern CDatabase db;
CString sql1,sql2;
....
sql1=" ....";
db.ExecuteSQL(sql);
.....
sql2="...";
db.ExecuteSQL(sql);
....

Re: in a function can i use ExecuteSQL using the same database connection more than two times not using CRecordset object?

Antony M Kancidrowski25-Jun-04 0:11

Antony M Kancidrowski

25-Jun-04 0:11

You can call as many ExecuteSQL statements as you like given that the sql is a valid sql statement.

Ant.

I'm hard, yet soft.
I'm coloured, yet clear.
I'm fuity and sweet.
I'm jelly, what am I? Muse on it further, I shall return! - David Williams (Little Britain)

How to idle the program for seconds?

pnpfriend24-Jun-04 11:13

pnpfriend

24-Jun-04 11:13

Hello All, I have client and server programs. They used NamedPipe to communicate.
Here little bit about what each program does.
Server:
- has 2 buttons, print and stop
- Once the print button get pressed, create the thread and call the thread function.
here the thread function,

<br />
UINT PrintingThreadFunction(LPVOID lParam)<br />
{  <br />
CServerDlg *s = ((CServerDlg *)lParam);<br />
 s->m_smain.OpenNewPipe(); <br />
 while(!stopprinting)<br />
  {	 <br />
	  s->m_smain.ClientPrinting();  // printing all checked files.    	  	  <br />
    if(stopprinting == (int)YES)<br />
	{<br />
		s->m_smain.CloseThePipe(); <br />
		break;<br />
	}<br />
  }   <br />
  stopprinting = (int)NO; // to stop printing...  <br />
  return (0);<br />
}<br />

The ClientPrinting() calls ConnectNamedPipe() which waits for the client to connect and then once the client connect to the pipe, it returns.

Client:
Client gets the file name from database and print it out. Then send the file name to Server using the same pipe.

Server has no problem Client's getting connected and sending a printed file name for 9 times. But at 10th time, Server get error message at ConnectNamePipe() which is
Unhandled exception at 0x0043e4cb in Server.exe: 0xC0000005: Access violation reading location 0x000000e4.

How can I eliminate this error?
I am thinking of using PostMessage(). But how the program also listen to the user click on Stop button?

Is stopping what the programs is doing for 10 seconds so the user can click on the quit button will help?

Thank you

Re: How to idle the program for seconds?

Anthony_Yio24-Jun-04 21:05

Anthony_Yio

24-Jun-04 21:05

I am thinking of using PostMessage(). But how the program also listen to the user click on Stop button?

Not sure of what the "stopprinting" is but would suggest to use event instead like this

<br />
if(WaitForSingleObject(<br />
  yourStopEventHandle,<br />
  INFINITE<br />
)== WAIT_OBJECT_0)<br />
{<br />
 //stop<br />
}<br />

check the event tutorial avail.

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Backlight Control Interface

Blake Miller24-Jun-04 11:01

Blake Miller

24-Jun-04 11:01

Having trouble getting this to work.
Need to control backlight level of LCD display.

Followed instructions for IOCTL_VIDEO_QUERY_SUPPORTED_BRIGHTNESS and not getting any errors, but not getting any 'levels' back either.

Has anyone else tried using this API yet?

Exponents

RedDragon2k24-Jun-04 10:51

RedDragon2k

24-Jun-04 10:51

Hi !

I have to variables of type long. now i need to exponent the first with the second and then modulus a third long. how can i realize this ???
please Help

MFG
RedDragon2k

Unix and C are the ultimate computer viruses.

Visit me: www.programming.info.ms

Re: Exponents

User 665824-Jun-04 11:07

User 6658

24-Jun-04 11:07

long value = pow(long1, long2) % long3;

you need to include <math.h>

regards

modified 12-Sep-18 21:01pm.

Re: Exponents

RedDragon2k24-Jun-04 11:24

RedDragon2k

24-Jun-04 11:24

Thx. But when i compile it i get the following error :

'%': Illegal, left operand has type 'double'

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Re: Exponents

User 665824-Jun-04 11:37

User 6658

24-Jun-04 11:37

MSDN says: The modulus operator (%) has a stricter requirement in that its operands must be of integral type.

just cast the pow() function to a (long)

modified 12-Sep-18 21:01pm.

Re: Exponents

Jeremy Falcon24-Jun-04 11:39

Jeremy Falcon

24-Jun-04 11:39

Try this...

long value = ((long)pow(long1, long2)) % long3;

Jeremy Falcon

Re: Exponents

gamitech24-Jun-04 12:49

gamitech

24-Jun-04 12:49

I suggest you do it manually with repeated multiplings and the apply the modulus

gabby

Users running network app!!!

24-Jun-04 10:47

I am creating a small application that is going to run on a network. I need to know the number of people that are running the application on the network. I had tried looking for an example on how to this but I can’t find any. Any help!!!

Re: Users running network app!!!

David Crow24-Jun-04 10:51

David Crow

24-Jun-04 10:51

When the application is started, you could simply write a "counter" number to some file. There are obviously lots of implications in doing this, but it is simple.

"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen

LoadLibrary via HTTP?

that_24-Jun-04 10:02

that_

24-Jun-04 10:02

HMODULE hm = LoadLibrary("http://some.server.net/downloads/a.dll");

Of course I know that the above does not work. Implementing the HTTP part is no problem, but how do I simulate LoadLibrary without an actual file?

(storing the downloaded DLL in a temporary file is not an option, I want real "zero footprint")

what is the difference between sscanf and atof in cast cstring into float?

vividtang24-Jun-04 9:29

vividtang

24-Jun-04 9:29

when i need cast cstring into float , i always use sscanf(mystr,"%f",ftype)//float ftype
fype=atof(mystr)
but which is better ,what is the difference between them?

Re: what is the difference between sscanf and atof in cast cstring into float?

David Crow24-Jun-04 10:19

David Crow

24-Jun-04 10:19

atof() will be faster because it does not have to parse a format string like sscanf() does.

"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen

Re: what is the difference between sscanf and atof in cast cstring into float?

Steve Mayfield24-Jun-04 10:40

Steve Mayfield

24-Jun-04 10:40

atof is faster and smaller since it does not have the overhead of a format string scanner - I would think that sscanf calls atof when it finds the %f in a format string. FYI, you are not doing a cast, you are doing a conversion.

Steve

about dialog color?

vividtang24-Jun-04 9:19

vividtang

24-Jun-04 9:19

hi:i create a dialog such as CMyDlg, i define a variable :CBrush m_brush,
then i in onInitDialog :m_brush.CreateSolidBrush(RGB(255,255,0))
then HBRUSH CMyDlg::OnCtlColor(CDC* pDC, CWnd* pWnd, UINT nCtlColor)
{
HBRUSH hbr = CDialog::OnCtlColor(pDC, pWnd, nCtlColor);
if (pWnd->GetDlgCtrlID() == IDC_STATIC)
{// Set the text color to red
pDC->SetTextColor(RGB(255, 0, 0));
// Set the background mode for text to transparent

pDC->SetBkMode(TRANSPARENT);
// Return handle to our CBrush object
hbr = m_brush;
}
return hbr;
}
but the text color is not i expected,and at the back of the text ,always exist white ?how to modify?but if i do these work in main dialog ,all is ok.

Re: about dialog color?

Arman S.26-Apr-07 2:45

Arman S.

26-Apr-07 2:45

Seems brushing is ok, so it should work. Though I want to point out two things;

1) Do not use pWnd->GetDlgCtrlID() == IDC_STATIC condition unless you assign a unique id to a static control (e.g. IDC_MYSTATIC). Instead, if you want to consider all the static controls, test against nCtlColor == CTLCOLOR_STATIC.

2) Why not to set the text color;
pDC->SetTextColor( some rgb );

--
=====
Arman

about dialog color?

vividtang24-Jun-04 9:10

vividtang

24-Jun-04 9:10

hi:

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