C / C++ / MFC

Re: Freak compiler error?

11-Jun-02 3:58

try writing the function like this:

void Utility::manexp(complex c,complex *mantss,int iex)
{
	*mantss=c*pow(10,-iex);
}

oRion12-Jun-02 0:01

oRion

12-Jun-02 0:01

Thanks for your reply. I have solved the problem for now.I think there is some problems with the complier in recognising what the type pow is supposed to be. I have used a dummy variable of double type. Then passing the pow value to that dummy and multiply it to mantss. It works this way as it make the compiler to recognise it's a double type.
OMG | :OMG:

Debugging command line functions

Ravi Sudhakar11-Jun-02 3:49

Ravi Sudhakar

11-Jun-02 3:49

Hi,

I have implemented some command line functions for my VC++ application which basically performs some serial communication functions with a device.

How do i debug the command line functions?

Thanks,
ravi.

Re: Debugging command line functions

C^hris L^osinger11-Jun-02 3:53

11-Jun-02 3:53

in the Project / Settings / Debug dialog, there's a place for you to enter your command line.

-c

Cheap oil. It's worth it!

Re: String resource length

String resource length

Hugo Hallman11-Jun-02 3:30

Hugo Hallman

11-Jun-02 3:30

Visual Studio 6sp5 (c++) won't accept to edit resource strings wit a certain length. Is Windows originally suffering from this weakness, and making this limitation in VS necessary, or it is just a weakness?

Hugo

Martin Ziacek11-Jun-02 6:22

Martin Ziacek

11-Jun-02 6:22

I think it is Visual Studio problem. I have the same problem with some very long SQL commands.

You can open *.rc files in any text editor and edit them. Resouce compiler accepts longer strings than VS. Sorry, I do not know limits.

Re: String resource length

Michael Dunn11-Jun-02 15:00

Michael Dunn

11-Jun-02 15:00

MSDN says a string "must be no longer than 4097 characters".

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9 bit serial communication

11-Jun-02 2:57

How can 9 bit data be transmitted and received serially? I worked with 8 bit data before, but how does it work for 9 bits? Thanks very much in advance!

9 bit serial communication

11-Jun-02 2:56

How can 9 bit data be transmitted and received serially? I worked with 8 bit data before, but how does it work for 9 bits? Thanks very much in advance!

Re: 9 bit serial communication

redeemer11-Jun-02 3:19

Re: 9 bit serial communication

11-Jun-02 3:19

If you were to recieve 9 bits, can't you just give it a short int (2 bytes) and then only read 9 bits of the value?

11-Jun-02 3:22

If I use short int and ReadFile() to read data from the port, it will be set up to read two bytes at a time. But the transmitting side is sending 9 bits of data only (with header and stuff, of course). Is it possible that I can read the 9th bit as a parity bit? But the thing is, I can't find any functions in VC++ to check for value of the parity bit or parity error-checking. If anyone knows about which function can perform the above, please post it. I greatly appreciate it. Thanx!

Re: 9 bit serial communication

Ravi Sudhakar11-Jun-02 4:18

Ravi Sudhakar

11-Jun-02 4:18

If you can read the 2 bytes in 2 characters
- if the 9th bit is the last bit (LSB) of second byte.
then logical and with 0x01 and if it's 0 then ur 9th bit is 0,
else if it's 1 - 9th bit is 1.

example : firstbyte = 0xf4
secondbyte = 0x01 (it can be either 1 or 0)
if(secondbyte & 0x01)
ninthbit = 1;
else
ninthbit = 0;

hope this helps..!
if you have further queries,post them..

thanks,
ravi

.dsw or .dsp from a make file...

Neha11-Jun-02 2:28

Neha

11-Jun-02 2:28

Hi,
How can i convert make file to a .dsw or .dsp file?
Thanks
Neha

Re: .dsw or .dsp from a make file...

Ravi Sudhakar11-Jun-02 3:50

Ravi Sudhakar

11-Jun-02 3:50

I think you can try opening the MAK file.
can refer to documentation in MSDN
title : "Port a Project Made with NMAKE to the Development Environment"

From the File menu, click Open Workspace.
The Open Project Workspace dialog box appears.

In the Files of type drop-down list, select All Files (*.*) to display all files.

Select the drive and directory containing the previous makefile.

Select the makefile from the list of files and click OK.

Hope this helps.

thanks,
ravi.

Dr Watson Log Files

Steve Thresher11-Jun-02 2:13

Steve Thresher

11-Jun-02 2:13

I have created a Win32 program using Visual Studio .NET which I would like to put on another Win2K machine along with the debug symbols (.PDB file). I am trying to use the Dr Watson log to identify where a program is crashing but it refuses to include symbol information. The same setup on an WinXP workstation works fine and the Dr Watson log correctly gives me the function name that includes my deliberate bug.

Can anybody give me some information or point me at some information about about installing exe's and debug symbols. This is how we hope to diagnose problems on customer sites so I would really appreciate any information on the subject.

Steve.

Systems AXIS Ltd - Software for Business ...

Re: Dr Watson Log Files

C^hris L^osinger11-Jun-02 2:21

11-Jun-02 2:21

find the article on this site about 'MiniDumps'. i think it's exactly what you want.

-c

Cheap oil. It's worth it!

how to change font color!

Re: Dr Watson Log Files

Steve Thresher11-Jun-02 4:07

Steve Thresher

11-Jun-02 4:07

Thanks for replying. The article looks very interesting!

Systems AXIS Ltd - Software for Business ...

tiaozi11-Jun-02 2:03

tiaozi

11-Jun-02 2:03

i want to change my dialog font's color!

Re: how to change font color!

Gary Kirkham11-Jun-02 3:00

Gary Kirkham

11-Jun-02 3:00

Override the Dialog's OnCtlColor and use the SetTextColor function

If ListView_GetSelectedCount returns more than 1, how do i know which items are selected?

redeemer11-Jun-02 1:37

Re: If ListView_GetSelectedCount returns more than 1, how do i know which items are selected?

11-Jun-02 1:37

It's in a List Control (the ones you can add on a dialog in the resource editor)

Thanks

C^hris L^osinger11-Jun-02 4:05

11-Jun-02 4:05

from MSDN:

CListCtrl* pListCtrl = (CListCtrl*) GetDlgItem(IDC_YOURLISTCONTROL);
ASSERT(pListCtrl != NULL);

POSITION pos = pList->GetFirstSelectedItemPosition();
if (pos == NULL)
   TRACE0("No items were selected!\n");
else
{
   while (pos)
   {
      int nItem = pList->GetNextSelectedItem(pos);
      TRACE1("Item %d was selected!\n", nItem);
      // you could do your own processing on nItem here
   }
}

-c

Cheap oil. It's worth it!

Re: If ListView_GetSelectedCount returns more than 1, how do i know which items are selected?

redeemer11-Jun-02 4:56

Re: If ListView_GetSelectedCount returns more than 1, how do i know which items are selected?

11-Jun-02 4:56

What if it's not MFC?

C^hris L^osinger11-Jun-02 5:29

11-Jun-02 5:29

you'll need to use LVM_GETNEXTITEM with the LVIS_SELECTED param.

(you should probably say "non-MFC" in your questions. that way i won't give you MFC answers Smile | :)

)

-c

Cheap oil. It's worth it!