Re: functions with 2d array argument - C / C++ / MFC Discussion Boards

Rajkumar R16-Feb-08 23:47

16-Feb-08 23:47

DTCodes[i].Code = tcCode; -> for every i assigning same global pointer tcCode.
ZeroMemory(tcCode, 0x06); -> effectively no data is stored in DTCodes[i].Code.

similarly,

DTCodes[i].Description = tcDescription;
ZeroMemory(tcDescription, 0xff);

DTCodes[i].Defined = tcDefined;
ZeroMemory(tcDefined, 0xff);

And exception can occur on buffer overrun,
strcat(tcCode, tcInputData); // what happens if tcCode string length > 0x06}
while(k != 0);
strcat(tcCode, "\0");

And why need strmp,strcat for single char operation, simple array manipulation is enough isn't it

k = strcmp(tcInputData, ",");  ->     if (tcInputData[0] != ',')
if(k == 1)
strcat(tcCode, tcInputData);   ->     tcCode[len++] = tcInputData[0];

Re: Reading a file into an array

jonsey2984717-Feb-08 10:31

jonsey29847

17-Feb-08 10:31

Thank for your reply, my thinking was that once assignment was made I no longer needed tcCode etc, see previous reply. The exception was being thrown in the debug environment because I fat fingered a handle later in the code. tcCode will always be 4 bytes in length, its coming from the ODBII ECU in an automobile, thus I could be conservative with its length.

I will change my code for the single char comparison, you example is much cleaner.

Thanks

Re: Reading a file into an array

Rajkumar R17-Feb-08 18:22

Rajkumar R

17-Feb-08 18:22

jonsey29847 wrote:
my thinking was that once assignment was made I no longer needed tcCode etc

DTCodes[i].Code = tcCode;
ZeroMemory(tcCode, 0x06);

u no longer needed tcCode, but i think u need DTCodes[i].Code, since both points to same address clearing tcCode, clears DTCodes[i].Code.

and also ur allocating tcCode once outside the for loop, hence for all i, DTCodes[i].Code points to same tcCode.

assigning doesnot copies a C-Style string.

the following change may be useful,
struct DTC{
char Code[0x06];
...
}DTCodes[0x10];
and copy the string to DTCodes[i].Code[len++] = tcInputData[0];

Re: Reading a file into an array

jonsey2984718-Feb-08 11:34

jonsey29847

18-Feb-08 11:34

Thanks very much, I have changed my code and it work very nicely.

Re: Reading a file into an array

jonsey2984718-Feb-08 11:36

jonsey29847

18-Feb-08 11:36

Thanks, I made the change and it works very well!

Embed a CToolBar within a CDialogBar

jeffb4216-Feb-08 4:45

jeffb42

16-Feb-08 4:45

I have a CDialogBar which uses a dialog resource, and the resource has some push buttons and a list box. I recently decided that I wanted the dialog bar to also have a tool bar at the top of its window. I've tried adding a CToolBar object, as well as tried adding a CToolBarCtrl, but I'm not able to get the tool bar to display.

I tried the same technique with adding a CToolBar object to a CDialog, and that worked fine (as did CToolBarCtrl), but when I try the same code within a CDialogBar, nothing appears.

Any suggestions? I've searched but I haven't found anything on the subject. I've found tips on how to add a CToolBar to a CDialog, but not how to add a CToolBar (or a CToolBarCtrl) to a CDialogBar.

Thanks,

Jeff

functions with 2d array argument

Adnan Merter16-Feb-08 4:18

Adnan Merter

16-Feb-08 4:18

i am new on c++

i need to create a function with 2d array argument.
i mean i can use the integer numbers in a 2d array in my function.

And i also need to know how i can copy the information from the textboxes to a 2d array in vc++.

i hope you will help me.

thanks

Re: functions with 2d array argument

CPallini16-Feb-08 4:39

CPallini

16-Feb-08 4:39

Adnan Merter wrote:
need to create a function with 2d array argument.
i mean i can use the integer numbers in a 2d array in my function.

for instance

int f(int a[3][2])
{
  int i,j;
  for(i=0; i<3; i++)
    for(j=0; j<2; j++)
      printf("a[%d][%d]=%d\n", i, j, a[i][j]);
  return 0;
}

Adnan Merter wrote:
And i also need to know how i can copy the information from the textboxes to a 2d array in vc++.

What is your difficulty about?
Smile | :)

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke

Re: functions with 2d array argument

Adnan Merter16-Feb-08 5:24

Adnan Merter

16-Feb-08 5:24

i have an array like x[5][5]
and i need to use it as an argument in my function i know how i use 1d array. i can it by using pointers.

void display (int *p, int size)<br />
{<br />
	int i;<br />
<br />
	for (i = 0; i < size; ++i)<br />
		printf("%-5d%-5d \n", p[i],&p[i]);<br />
}<br />
<br />
int main()<br />
{<br />
	int a[5] = {3, 8, 7, 6, 10};<br />
<br />
	display(a, 5);<br />
return 0;<br />
}

but i dont know how ican use 2d arrays

Re: functions with 2d array argument

CPallini16-Feb-08 6:46

CPallini

16-Feb-08 6:46

For instance:

void display (int *p, int size0, int size1)
{
  int i, j;

  for (i = 0; i < size0; i++)
    for (j = 0; j< size1; j++, p++)
      printf("%-5d \n", *p );
}

int main()
{
  int a[2][5] = {{3, 8, 7, 6, 10}, {6, 16, 14, 12, 20}};
  display((int *)a, 2, 5);
}

simulate ctrl+alt+delete keys in windows

Abdul_khaliq_16-Feb-08 2:27

Abdul_khaliq_

16-Feb-08 2:27

Hi all

i want to simulate the ctrl + alt + delete keys

I am facing problem with this code. I able to get the reference of the "winlogon" desktop but am unable to simulate the ctrl + alt + delete keys.

can any one help please.

HDESK desktop;
ofstream myfile;

HDESK old_desktop = GetThreadDesktop(GetCurrentThreadId());
myfile.open ("c:\\desktop.txt");
// Attempt to open the named desktop
esktop = OpenDesktop("Winlogon", 0, FALSE,
DESKTOP_CREATEMENU | DESKTOP_CREATEWINDOW |
DESKTOP_ENUMERATE | DESKTOP_HOOKCONTROL |
DESKTOP_WRITEOBJECTS | DESKTOP_READOBJECTS |
DESKTOP_SWITCHDESKTOP | GENERIC_WRITE);

if(desktop!=NULL){
myfile << "desktop found.\n";
}else{
myfile << "desktop not found.\n";
}
HWND hwndCtrlAltDel = FindWindow("SAS window class", "SAS window");
if (hwndCtrlAltDel == NULL) {
myfile << "SAS window not found.\n";
hwndCtrlAltDel = HWND_BROADCAST;
}
PostMessage(hwndCtrlAltDel, WM_HOTKEY, 0, MAKELONG(MOD_ALT | MOD_CONTROL, VK_DELETE));

HWND logonwindow = FindWindow("", "Log On to Windows");
if (logonwindow == NULL) {
myfile << "logon window not found.\n";
}
myfile.close();

Re: simulate ctrl+alt+delete keys in windows

Baltoro17-Feb-08 10:13

Baltoro

17-Feb-08 10:13

You might find this interesting:
Secure Attention Sequence

Borderless ComboBox

Humayun Kabir Hemoo16-Feb-08 0:24

Humayun Kabir Hemoo

16-Feb-08 0:24

Can any on tell me how to remove borders from a Combobox. I tried SetWindowRegion, it worked for Edit control, but it did not work with Combobox

Thanx Sigh | :sigh:

Md. Humayuon Kabir Hemoo

modified on Saturday, February 16, 2008 12:55 PM

Re: Borderless ComboBox

Mark Salsbery17-Feb-08 8:47

Mark Salsbery

17-Feb-08 8:47

You could try removing any border styles from the window styles associated with the
control.

If a control's painting implementation ignores the style then you have no choice but to draw
the control yourself.

MArk

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Re: Borderless ComboBox

Humayun Kabir Hemoo18-Feb-08 4:15

Humayun Kabir Hemoo

18-Feb-08 4:15

Hi Mark,

Thanks for your response. It seemes I need to draw the combobox my self. But don't you think SetWindowRegion should set the painting area of a control?

Humayoun

Md. Humayuon Kabir Hemoo

Re: Borderless ComboBox

Mark Salsbery18-Feb-08 5:54

Mark Salsbery

18-Feb-08 5:54

Humayun Kabir Hemoo wrote:
But don't you think SetWindowRegion should set the painting area of a control?

Not necessarily. The control draws itself just like any other window.
Whether the control sets its own region or not, or honors any of the styles you
create it with, depends on the implementation.

Mark

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Re: Borderless ComboBox

Humayun Kabir Hemoo18-Feb-08 13:55

Humayun Kabir Hemoo

18-Feb-08 13:55

I didn't know this before, thanx. By the way, removing WS_BORDER didn't work.

Md. Humayuon Kabir Hemoo

Re: Borderless ComboBox

Hamid_RT18-Feb-08 7:35

Hamid_RT

18-Feb-08 7:35

Do you want to customize combobox or remove border of it?

Re: Borderless ComboBox

Humayun Kabir Hemoo18-Feb-08 13:54

Humayun Kabir Hemoo

18-Feb-08 13:54

I want to remove the border.

Md. Humayuon Kabir Hemoo

Re: Borderless ComboBox

Hamid_RT18-Feb-08 19:35

Hamid_RT

18-Feb-08 19:35

So you can use of property window of combobox or use of ModifyStyle(....) for remove each style that you dont want it.

process output

bhat15-Feb-08 23:30

bhat

15-Feb-08 23:30

can we make any control(like edit box) as the standard output device so that the result of the process can b directly shown in that particular edit box without any interaction ..............i think it is possible when we run the procees using createProces() and pass appropriate arguements.......but i am not able to complete it

AbidBhat

Re: process output

BadKarma16-Feb-08 0:11

BadKarma

16-Feb-08 0:11