Re: Start an application remotely - C / C++ / MFC Discussion Boards

Jonavis8-Jun-04 10:22

8-Jun-04 10:22

well. Im not stuck on the idea that it has to be web based..but I did want to use the visual benifits that FLASH can give me for this application...therefore I need to create other components (.DLLs for example) that I could control (send and recieve data) through my FLASH and save into a database for inventory, statistics and other information..

Im interested in the DLLs that can recieve and send info to the cashier, so that my web interface can know when the register is open or closed...or..so that I can OPEN the cashier through my FLASH movie..

With this I can save a log in my database of when and by who the register was opened..(I would have a previous login)

X-ZD Designs

A question about DirectX and CDoc/CView

chenbuaa8-Jun-04 5:14

chenbuaa

8-Jun-04 5:14

I design my DirectX project like this:

CScene{

...
creat Driect3D object,
creat Driect3D device,
render()
...
}
and I need a instance of CScene in MFC framework.
There should be only one instance of CScene in the whole porject, is that right?
The question is which class I should implement the CScene? I want to get the best effciency!

Any exam code is welcome~~

Many thanks!

CCheckListBox

Jnewg58-Jun-04 5:06

Jnewg5

8-Jun-04 5:06

I have a derived class of CCheckListBox. I would like to prevent the checkbox from appearing on certain items in my list. I have overridden the DrawItem and MeasureItem routines, but don't want to simply just paint over the rectangle area that encompasses the checkboxes. Is there a field in the LPDRAWITEMSTRUCT that I can set to a particular value that would remove the checkbox for a particular item? If there is a solution for this, will it also remove the framework event handling of the mouse clicks in the checkbox region of the list item?

Thanks,
Bob

how to open document with exiting application?

pnpfriend8-Jun-04 4:26

pnpfriend

8-Jun-04 4:26

Hi all, how to open the document with the exiting MS Word Application?
I used CreateToolhelp32Snapshot() to find out whether MS Word, MS Excel, and MS Powerpoint exe files are open. Then I want to open the file ( .doc file with MSWord, .xls file with MSExcel, .ppt with MSPowerpoint) with exiting application.
I used mswApp.CreateDispatch(TEXT("Word.Application")) to open word application. But I dont want to open the application, then close it after the document is closed. I want to just open the application once.
Now I know whether the application is already open or not.

How to do the next step, open the document with application already opened?

Re: how to open document with exiting application?

vcplusplus8-Jun-04 5:19

vcplusplus

8-Jun-04 5:19

This will open the existing application that has been associated with the .doc extension. If you had text.xls, it would open whatever application that has been associated with "xls".

ShellExecute(NULL, "open", "test.doc", NULL, NULL, SW_SHOWNORMAL);

Check out this web site.
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/shellcc/platform/shell/reference/functions/shellexecute.asp?frame=true

Re: how to open document with exiting application?

Anonymous9-Jun-04 4:09

Anonymous

9-Jun-04 4:09

I know about ShellExecute() and ShellExecuteEx().
However I have to format those office files (.doc,.xls,.ppt) such as formating the page setup like page size, margins, quality, paper size, etc., formating font size, and also printing out embedded objects in word document. Therefore, I have to use automation.

However, I am encountering the error in my program.
The function is marshalled to other thread

here what I do,
I have a dialog that has 3 buttons, print, stop printing, and exit.
when you click print, the program will get files name from database and send it to printer. The printer send message (window message) END_DOC when the file get printed and the program catch the message and send the next file. Meanwhile, if the user click on stop printing button, the program stop immediately.

Inorder to stop printing, I have use following code.
dlg->openApps() opens ms word, excel, and powerpoint application just simply using CreateDispatch().
dlg->closeApps() closes or quite applications.
PrintTheFile() gets the file name, and send it to printer

<br />
UINT PrintingThreadFunction(LPVOID lParam)<br />
{<br />
  CMyProgDlg *dlg = (CMyProgDlg *) lParam;<br />
  bool openapps = true;<br />
  dlg->openApps(); //open all Office applications, ms word, ms excel,ms powerpoint<br />
  while(!stopprinting) //stopprinting = 1 when user clicked on StopPrinting Button<br />
  {<br />
	  if(isprinting == NO)		  //<br />
	  {		  		  <br />
		  dlg->PrintWordDoc() ;  // printing all checked files.    <br />
	  }<br />
	  if(stopprinting == (int)YES || dlg->quite)<br />
		  break;<br />
  }  <br />
  dlg->closeApps(); //open all Office applications, ms word, ms excel,ms powerpoint<br />
}<br />
<br />
<br />
void CMyProgDlg::OnBnClickedPrint()<br />
{<br />
 CWinThread *printingThread;  <br />
	printingThread = AfxBeginThread(PrintingThreadFunction,this);//&m_hWnd,THREAD_PRIORITY_BELOW_NORMAL,0,CREATE_SUSPENDED);<br />
	printingThread->m_bAutoDelete = FALSE;<br />
}<br />

To catch the message sent by printer I used following code.

<br />
LRESULT CMyProgDlg::OnPrinterMsg(WPARAM wParam, LPARAM lParam )<br />
{<br />
.....<br />
.....<br />
case End_DOC:<br />
PrintWordDoc();<br />
}<br />

Opening and closing office applications take 7 secs to open and 7 sec to close. I want to speed up my program by opening those applications once and close it at when user quite the program.

How to just open those applications once and open the document over and over again with exiting application (.doc with msword, .xls with excel, .ppt with powerpoint)?

thank you

Start an application remotely

stupidflasucks8-Jun-04 3:53

stupidflasucks

8-Jun-04 3:53

I am trying to start an application on a remote PC with CreateProcess(), but it is executed on the local PC instead. You will see that I just call CreateProcess() putting "\\otherPC" in front of the path of the application. The code is listed below:

PROCESS_INFORMATION processInfo;
STARTUPINFO startupInfo;
GetStartupInfo(&startupInfo);

DWORD processCreationFlag=CREATE_NEW_PROCESS_GROUP|CREATE_SUSPENDED;
startupInfo.dwFlags = STARTF_USESHOWWINDOW;
startupInfo.wShowWindow = SW_SHOWNORMAL; // SW_SHOWMINIMIZED;

strcpy(startupInfo.lpDesktop, "");
startupInfo.lpTitle=NULL;

char *startingFolder=strdup("\\\\otherPC\\C\\DIM\\ImsVisualization\\bin");
char applicationName[512];
sprintf(applicationName, "%s\\iMSVisualization.exe", startingFolder);

if (CreateProcess(applicationName, NULL, NULL, NULL, true, processCreationFlag,//|CREATE_NEW_CONSOLE,
NULL, startingFolder, &startupInfo, &processInfo)==0)
{
printf("Could not start Visualization\n");

}
else printf("Visualization started successfully\n");

return 0;

Re: Start an application remotely

David Crow8-Jun-04 4:10

David Crow

8-Jun-04 4:10

You can't use CreateProcess() in this fashion. What you've done is run an application, that resides on another machine, on the local machine. Search CP and MSDN for RPC examples.

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

A question about two simple types

scoutcc8-Jun-04 2:47

scoutcc

8-Jun-04 2:47

Hi,i am a newer at here.As we all know , "HINSTENCE" and "HWND" are different data types in VC++,there are two datas which defined as each of them,can i send the same value two the two datas,if can , how can i do this ?
Thanks!

Re: A question about two simple types

Antony M Kancidrowski8-Jun-04 2:58

Antony M Kancidrowski

8-Jun-04 2:58

Both HWND and HINSTANCE are handles (void*) and could be assigned the same value!?! Though for the life of me I can't see why Confused | :confused:

Ant.

I'm hard, yet soft.
I'm coloured, yet clear.
I'm fuity and sweet.
I'm jelly, what am I? - David Williams (Little Britain)

to calculate the Time of Playing an Audio file

shiva shankar8-Jun-04 2:47

shiva shankar

8-Jun-04 2:47

plz can any one help me in calculating the time, that will be taken in playing the audio file using c or vc++ program.

Re: to calculate the Time of Playing an Audio file

David Crow8-Jun-04 3:18

David Crow

8-Jun-04 3:18

Near the beginning of the file is some header information. One of the fields is the average bytes per second (i.e., sampling rate). Divide this into the size of the file to get the approximate play time. For example, the The Microsoft Sound.wav file is 135,876 bytes in size and has a sampling rate of 22.50 kHz, which yields 6.038 seconds. Opening that same file with Sound Recorder shows that it is 6.12 seconds in length. Does that help?

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

Strange timer problem

Roger Stoltz8-Jun-04 2:44

Roger Stoltz

8-Jun-04 2:44

I need to know when a user defined time has elapsed for communication reasons.
The time is typically within the range of 1 to 20 ms.
I am fully aware of windows not being a RTOS, but that is not the problem.
My problem is that I get much better results with a PII 800MHz CPU running WinNT than with a P4 2.4GHz CPU running WinXP.
I have tried both a waitable timer solution and a multimedia timer solution with exactly the same results. There is no difference between setting the mm-timer resolution to 1 or 0.

While trying to nail this down I have created a small app that simply creates a timer and waits for it with WaitFor...() with no other threads involved.
If I set the due time to 10ms I get variations between 9 and 10ms in the PII environment, but in the P4 environment I get variations between 0 and 15ms.
I would understand if the timer event got signaled later than expected in the PII environment but this is not the case, it sometimes gets signaled long before the expected due time. Boosting process or thread priorities doesn't help.
In the original app where I discovered the problem the time differences are measured with independant hardware.

MSDN documentation about waitable timers says something like "the timer accuracy depends on the hardware capability". I just don't understand why "better" hardware performance is worse.

This is how I do it in pseudo-code:
CreateWaitableTimer
QueryPerformanceCounter
SetWaitableTimer
WaitForSingleObject
QueryPerformanceCounter

What's wrong with this picture?
How can "better" hardware and OS perform worse than older?
Is it an OS or BIOS setting I am unaware of?

Any comments are very welcome.

Thanks in advance
--
Rog

Re: Strange timer problem

David Crow8-Jun-04 2:52

David Crow

8-Jun-04 2:52

Maye a different crystal oscillating frequency is being used between the two machines. CPU speed is irrelevant.

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

Re: Strange timer problem

Antony M Kancidrowski8-Jun-04 3:19

Antony M Kancidrowski

8-Jun-04 3:19

This problem is not a processor problem rather a motherboard chipset problem.

PerformanceCounter problems have been reported by other people, and are attributed to problems with certain chipsets. Specifically, some chipsets fail to carry the rollover from bit 23 into bit 24, or do so spuriously, depending on the interval between successive calls to QueryPerformanceCounter.

Ant.

I'm hard, yet soft.
I'm coloured, yet clear.
I'm fuity and sweet.
I'm jelly, what am I? - David Williams (Little Britain)

Re: Strange timer problem

Roger Stoltz8-Jun-04 3:48

Roger Stoltz

8-Jun-04 3:48

That's true.
But even if I could be exposed to such a chipset and it could be an error in the measurement method regarding my test application, it doesn't explain why the PII WinNT env. is more accurate when measuring with hardware.

Thanks anyway
--
Rog

Re: Strange timer problem

Antony M Kancidrowski8-Jun-04 4:07

Antony M Kancidrowski

8-Jun-04 4:07

I agree given that it is the same hardware (chipset) you are running the tests on.

Ant.

I'm hard, yet soft.
I'm coloured, yet clear.
I'm fuity and sweet.
I'm jelly, what am I? - David Williams (Little Britain)

How can i creat DSN for database by writing code in my Program

Zeeshan Bilal8-Jun-04 2:36

Zeeshan Bilal

8-Jun-04 2:36

HI ,

How can I Create DSN for my Database
That is for database provided with my program to user..

i wanna Create DSN through my Code is it Possible
or some other way

I m using VC++ and Access as Database.

Rely me thanx

Re: How can i creat DSN for database by writing code in my Program

David Crow8-Jun-04 2:47

David Crow

8-Jun-04 2:47

Zeeshan Bilal wrote:
How can I Create DSN...

By using SQLConfigDataSource().

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

Sending commands over USB

Daudi8-Jun-04 2:22

Daudi

8-Jun-04 2:22

Hi,

am new at this and have a project to send hci commands via the usb port to a bluetooth dongle. Any idea how i could approach this.

Thanks.

the windows ui question

boyboy8-Jun-04 1:55

boyboy

8-Jun-04 1:55

As we all know,the right bottom of the window has a little triangle,how to change it's color.Maybe it's a little question,but it's important for me,can you help me?

hiall

Re: the windows ui question

ohadp8-Jun-04 5:06

ohadp

8-Jun-04 5:06

If you're reffering to the resize-grip, it's appearance is not typically changable.

What you can start experimenting with is overriding OnNCPaint, letting windows/mfc draw the grip, and then overriding just the grip to whatever you want it to be...

Passing the address of an object in to a Function

bhangie8-Jun-04 1:51

bhangie

8-Jun-04 1:51

Hi there
Sorry for the Slopy Subject line!.
What i whant to know is the following.

I have declared a vector of person Objects
vector(person) people; //in main

I have a confrence class

class conf<br />
{<br />
  public:<br />
  conf(const string &nm, int d);<br />
  void set_venue(venue *);<br />
  void cancel_venue();<br />
  private:<br />
  string conference_name;<br />
  int duration;<br />
  venue * pvenue; //pointer to venue class<br />
}

I Have added a data member to the conf class which is
a vector of pointers to person
vector(person *) registered;

and the following member function to register a person
who choose to attend a conference.
void register_person(????);

So this is what i must do, ok so person objects where added to people //vector(person)people;

The person running the program gets to decide who will
attend a certian confr thus needing to register this person for the confr.
By index how would i pass the address of the specified person object to my register_person(????); function and get register_person(????); to append this person object
to my registration vector(Containing only registered persons).

I am knot sure about this->
register_person(person & registered)? needs to recieve the
address of a specified(index) person object.

Help me Unsure | :~

Education begins a gentleman,
conversation completes him Wink | ;)

Re: Passing the address of an object in to a Function

Jnewg58-Jun-04 5:38

Jnewg5

8-Jun-04 5:38

If your prototype for register_person is as you stated "register_person(person & registered", then all you really need to do is do "registered.push_back(®istered)". If you are uncertain of the number of persons, you should be going to the heap for allocation. Then you should be doing "news" on the Person objects and thus your prototype for register_person should be "register_person(person * registered)". You would then just need to do "registered.push_back(person)".

How to “overregistrate” an already registerd dll?

anderslundsgard8-Jun-04 1:27

anderslundsgard

8-Jun-04 1:27

I’m developing a program that uses and depends on a “bought” dll. Everything worked until I got a new version of the dll and tries to use that one with it’s new shipping api.
It seams like, despite I run:

regsvr32 –u MyDll.dll
and then the new dll with the same name
regsvr32 MyDll.dll

the new dll can’t get used at runtime.

All tips are welcomed!!!

...and justice for all

APe

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