C / C++ / MFC

Mustafa Demirhan20-Aug-02 11:11

Mustafa Demirhan

20-Aug-02 11:11

Are you sure that the error is in these lines? It seems to be correct.
It may be because allocation of char* on the heap fails (just a guess).

Mustafa Demirhan
http://www.macroangel.com
Sonork ID 100.9935:zoltrix

<nobr>They say I'm lazy but it takes all my time

carrie20-Aug-02 11:21

carrie

20-Aug-02 11:21

d'oh, you're right, and thanks for the quick reply because you just made me set a breakpoint and saw that it wasn't that that was the problem. I'm trying to use the WinSpy32 code to make something of my own and didn't spot it doing something in the background.

Sorry to be an idiot, 4 years of a computing degree, 3 of them in C & C++ and I can't even do the basics sometimes Smile | :)

Thanks again Smile | :)

Mustafa Demirhan20-Aug-02 11:26

Mustafa Demirhan

20-Aug-02 11:26

carrie wrote:
Sorry to be an idiot, 4 years of a computing degree, 3 of them in C & C++ and I can't even do the basics sometimes

This happens sometimes. Once, in Linux, in a simuation program i was stuck with an error for a whole day. Then I started to blame the simulation program. But it turned out that I was trying to divide an integer by zero Roll eyes | :rolleyes:

Now I blame linux, because instead of telling me that there is a divide by zero error, it just gave me that famous error report "segmentation fault". Nothing more WTF | :WTF:

Mustafa Demirhan
http://www.macroangel.com
Sonork ID 100.9935:zoltrix

<nobr>They say I'm lazy but it takes all my time

C^hris L^osinger20-Aug-02 11:14

C^hris L^osinger

20-Aug-02 11:14

are you doing a Unicode build?

-c

Though the cough, hough and hiccough so unsought would plough me through,
enough that I o'er life's dark lough my thorough course pursue.
--Stuart Kidd

image effects!

Ernest Laurentin20-Aug-02 11:17

Ernest Laurentin

20-Aug-02 11:17

Did you try this too? if you are compiling ASCII version, your code should work.

TCHAR* szPath = new TCHAR[pathToExe.GetLength()+1];
lstrcpy(szPath, pathToExe);
TRACE("szPath = %s\n",szPath);

VOTD: 23 "And this is his command: to believe in the name of his Son,
Jesus Christ, and to love one another as he commanded us." - 1 John 3:23 (NIV)

PJ Arends20-Aug-02 13:21

PJ Arends

20-Aug-02 13:21

Your code sample will crash if used in a UNICODE build. new will allocate a certain number of bytes, not characters

TCHAR* szPath = new TCHAR[ (pathToExe.GetLength() + 1) * sizeof(TCHAR) ];

CPUA 0x5041

Sonork 100.11743 Chicken Little

"So it can now be written in stone as a testament to humanities achievments "PJ did Pi at CP"." Colin Davies

Within you lies the power for good - Use it!

Ernest Laurentin20-Aug-02 14:33

Ernest Laurentin

20-Aug-02 14:33

Hmmm... I was surprised by your comment since you are allocating twice memory than
necessary. sizeof(TCHAR)==1 for ASCII and 2 for _UNICODE build. I tried it with VS .NET and it works fine. It should work also with VS6. Confused | :confused:

BTW, I used lstrcpy in my example not strcpy!

VOTD: 23 "And this is his command: to believe in the name of his Son,
Jesus Christ, and to love one another as he commanded us." - 1 John 3:23 (NIV)

Tim Smith20-Aug-02 15:12

Tim Smith

20-Aug-02 15:12

You are right, PJ lost his mind there for a moment. He is thinking malloc and not new.

Tim Smith

"Programmers are always surrounded by complexity; we can not avoid it... If our basic tool, the language in which we design and code our programs, is also complicated, the language itself becomes part of the problem rather that part of the solution."
Hoare - 1980 ACM Turing Award Lecture

PJ Arends20-Aug-02 16:48

PJ Arends

20-Aug-02 16:48

No, I did not loose my mind. But now that you point it out, and I think about it, I will admit that I was wrong. No excuse can be made for ignorance. Roll eyes | :rolleyes:

Daniel Turini20-Aug-02 11:19

Daniel Turini

20-Aug-02 11:19

Try LockBuffer/UnlockBuffer for obtaining a non-const LPSTR

Concussus surgo.
When struck I rise.

get text of first item in Clistctrl without selecting it

carrie20-Aug-02 11:23

carrie

20-Aug-02 11:23

damn you guys are megafast tonight Smile | :)

So fast that when I was replying another 3 turned up :p Thats impressive, thanks to you all for your help, time to try to decipher some more code Smile | :)

ns20-Aug-02 10:13

20-Aug-02 10:13

This is probably elementary but I cant find anything suitable in the docs. All i want to do is put the text from the first item in the listbox, into an edit box. I wont be selecting the item, I just want the text from it.

Thanks,
ns

Re: get text of first item in Clistctrl without selecting it

dazinith20-Aug-02 10:24

Re: get text of first item in Clistctrl without selecting it

20-Aug-02 10:24

from msdn:

CString GetItemText(int nItem, int nSubItem );
Parameters:
nItem - The index of the item whose text is to be retrieved. 
nSubItem - Specifies the subitem whose text is to be retrieved.

ex: CString strTemp = m_lbMyListBox.GetItemText(0,0);

-dz

ns20-Aug-02 10:50

20-Aug-02 10:50

Oops! I missed that somehow! Thanks,
ns Blush | :O

File Version

act_x20-Aug-02 10:00

act_x

20-Aug-02 10:00

I have an .exe File and need to display the version as the title of the Dialog Application . Is there a way I can grab this information and Display it ?
Please Help

Re: File Version

Dave Bryant20-Aug-02 10:26

Dave Bryant

20-Aug-02 10:26

BOOL CMyApp::GetCurrentFileVersionParts(int &a, int &b, int &c, int &d)
{
TCHAR buf[1024];
GetModuleFileName( NULL, buf, sizeof( buf ) );
char version[512];
VS_FIXEDFILEINFO *outputversion;

BOOL ret = GetFileVersionInfo( buf, 0, sizeof( version ), version );

UINT szLen;
ret = VerQueryValue( version, _T("\\"), (void**)&outputversion, &szLen ) ;
if( !ret )
return FALSE;

a = HIWORD( outputversion->dwFileVersionMS );
b = LOWORD( outputversion->dwFileVersionMS );
c = HIWORD( outputversion->dwFileVersionLS );
d = LOWORD( outputversion->dwFileVersionLS );

return TRUE;
}

Dave

CTreeCtrl and Selection Changed Event

dazinith20-Aug-02 9:47

20-Aug-02 9:47

I have a CTreeCtrl who has a message handler for TVN_SELCHANGED

ON_NOTIFY(TVN_SELCHANGED, IDC_MYTREE, OnTvnSelchangedMyTree)

this function looks like this:

void CMyApp::OnTvnSelchangedMyTree(NMHDR *pNMHDR, LRESULT *pResult)
{
	TRACE("CMyApp::OnTvnSelchangedMyTree()\n");
	LPNMTREEVIEW pNMTreeView = reinterpret_cast<LPNMTREEVIEW>(pNMHDR);
	UpdateStatusPane();
	*pResult = 0;
}

my problem is that when I populate the list it calls this OnTvnSelchangedMyTree() after every item that is added to the list.. my UpdateStatusPane() is a little lengthy, so it makes the populating of my tree slow..

is there any way to add items to a tree without sending a selection changed message after each one added? anyone have any other suggestions?

thanks in advance!

-dz

Ernest Laurentin20-Aug-02 11:08

Ernest Laurentin

20-Aug-02 11:08

Did you try to remove TVS_SHOWSELALWAYS style with ModifyStyle(...)?
I was not sure what you were doing inside of UpdateStatusPane(), are you changing the tree selection again? If so, then you shouldn't!

VOTD: 23 "And this is his command: to believe in the name of his Son,
Jesus Christ, and to love one another as he commanded us." - 1 John 3:23 (NIV)

dazinith20-Aug-02 11:19

20-Aug-02 11:19

i turned the always show selection off and it still calls the selection changed event handler.. ah well..

i fixed it by adding this:

if (pNMTreeView->action != TVC_UNKNOWN) // dont update the button states just from populating, only do when selected by mouse or keyboard
    UpdateStatusPane();

my UpdateStatusPane() is just populating a side view with a bunch of info about whats selected.. the if statement i added makes it where it wont call the function unless the user selects the item with the keyboard or mouse, not if it is told the selection changed by another function.

-dz

Joel Lucsy21-Aug-02 12:38

Joel Lucsy

21-Aug-02 12:38

I'm not sure if this will help but try calling SetRedraw( FALSE ) before any updates and SetRedraw( TRUE ) when you're done.

Joel Lucsy (jjlucsy@ameritech.net)

dazinith22-Aug-02 3:43

22-Aug-02 3:43

wow, that got rid of all of my flickering! thanks a ton!

-dz

Hyperlink Question

Onyme20-Aug-02 9:13

Onyme

20-Aug-02 9:13

I would like to know how to add a hyperlink to a Dialod window.

Thanks

Re: Hyperlink Question

dazinith20-Aug-02 9:36