Re: Invoke the constructor - C / C++ / MFC Discussion Boards

Re: I had no idea it would be this complex

Budric B.8-Feb-05 3:37

8-Feb-05 3:37

Yes, I figured that was the case. Originally I asked if it was possible to find out how much memory I can allocate. Using the RAM size was something to fall back on. I'll use it to make crude estimations.

passing Visual C++ variable to an VB Access subroutine

elephantstar7-Feb-05 8:12

elephantstar

7-Feb-05 8:12

When I create a MSDE database within my application, I call OpenProcess() to open up a Access project file. This project file then starts up form that calls a subroutine. This subroutine needs the variable from my Visual C++ application in order to connect to the newly created database and display the tables. How do I go about doing this? Thanks!

How to crate new frame

TooLeeDiN7-Feb-05 8:06

TooLeeDiN

7-Feb-05 8:06

How to crate new frame that independent with it parante.

Re: How to crate new frame

Budric B.7-Feb-05 9:00

Budric B.

7-Feb-05 9:00

Make your frame class and derive it from CFrameWnd. Create an object using your constructor. Then call CFrameWnd::Create(..) function on your object. Here's an example: CFrameWnd::Create(NULL, "", WS_POPUP, location,NULL,0,NULL);
I pass NULL as the argument for parent. Look up on MSDN what the other parameters are.

Re: How to crate new frame

Anonymous8-Feb-05 18:36

Anonymous

8-Feb-05 18:36

Thank you i will try.

Re: How to crate new frame

Anonymous8-Feb-05 18:41

Anonymous

8-Feb-05 18:41

Form your method how i can call this frame.

Invoke the constructor

Gurra_Koo7-Feb-05 7:53

Gurra_Koo

7-Feb-05 7:53

Hi,

I'm trying to create a memory manager. And I'm doing that in such a way that using the new or malloc functions is out of the question.
The memory manager is allocating memory in the pagefile. First the manager allocates chunks of memory and then split that up into objects.
The problem I have is that I need to initialize the allocations with the custructor for the object requesting the memory.
Now how do I "call" or invoke the constructor for the object, without using new or malloc(or etc...)?

Any help or opinion would be appreciated...
Thanks,

Re: Invoke the constructor

Joaquín M López Muñoz7-Feb-05 8:21

Joaquín M López Muñoz

7-Feb-05 8:21

A form of new called placement new[^] is exactly meant for what you need.

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo
Want a Boost forum in Code Project? Vote here[^]!

Re: Invoke the constructor

Gurra_Koo7-Feb-05 8:53

Gurra_Koo

7-Feb-05 8:53

Thanks! That really works! Amazing!

CfileDlg

elfokab7-Feb-05 5:49

elfokab

7-Feb-05 5:49

Estoy intentando usar el GUI de microsoft para seleccionar directorios, de momento he usado el CFileDlg pero no me deja seleccionar un directorio , he probado varias opciones pero no me ayudan ¿alguna sugerencia?
Gracias

I want to use the GUI of microsoft to select directories, i try it with the CFileDlg class but it don´t let mi select one directorie ¿Can somebody help me?
Thanks

Re: CfileDlg

ThatsAlok7-Feb-05 6:51

ThatsAlok

7-Feb-05 6:51

This link will help you out
http://www.codeproject.com/shell/cxsbrowsefolder.asp

"I Think this Will Help"
<h5
alok="" gupta="" <br=""> visit me at http://www.thisisalok.tk

Re: CfileDlg

Michael Dunn7-Feb-05 6:54

Michael Dunn

7-Feb-05 6:54

See the FAQ
4.13 How do I prompt the user to select a directory?[^]

--Mike--
LINKS~! Ericahist updated! | 1ClickPicGrabber | CP SearchBar v2.0.2 | C++ Forum FAQ
Strange things are afoot at the U+004B U+20DD

Fonts for CTreeCtrl. What is not right now?

bilas7-Feb-05 5:42

bilas

7-Feb-05 5:42

I want to set specific font for my tree, so I use CUSTOMDRAW event. I've write two functions that must set my own font, but they do not work D'Oh! | :doh:

Please, help me. What is incorrect in my functions?

<br />
<br />
void CMyTree::OnNMCustomdraw(NMHDR *pNMHDR, LRESULT *pResult)<br />
{<br />
        LPNMTVCUSTOMDRAW pNMTVCD = (LPNMTVCUSTOMDRAW) pNMHDR;<br />
        HWND hWndTreeView = pNMHDR->hwndFrom;<br />
        if (pNMHDR->code == NM_CUSTOMDRAW)<br />
              *pResult = handleCustomDraw(hWndTreeView, pNMTVCD);<br />
<br />
    *pResult = handleCustomDraw(hWndTreeView, pNMTVCD);<br />
    //*pResult = 0;<br />
}<br />
<br />
<br />
long CMyTree::handleCustomDraw(HWND hWndTreeView, LPNMTVCUSTOMDRAW pNMTVCD)<br />
{<br />
        if (pNMTVCD==NULL)<br />
        {<br />
            return -1;<br />
	}<br />
        switch (pNMTVCD->nmcd.dwDrawStage)<br />
        { <br />
                case CDDS_PREPAINT:<br />
                {<br />
                     return (CDRF_NOTIFYPOSTPAINT | CDRF_NOTIFYITEMDRAW);<br />
		}<br />
                case CDDS_ITEMPREPAINT:<br />
                {<br />
                        LOGFONT lf;<br />
                        lf.lfHeight = 20;<br />
                        lstrcpy(lf.lfFaceName, "Time New Roman");<br />
                        lf.lfWeight = FW_HEAVY;<br />
                        lf.lfItalic = TRUE;<br />
                        HFONT gh = CreateFontIndirect(&lf);;<br />
                        SelectObject(pNMTVCD->nmcd.hdc, &gh);<br />
                        return (CDRF_NOTIFYPOSTPAINT | CDRF_NEWFONT);<br />
                }<br />
                case CDDS_ITEMPOSTPAINT:<br />
                {<br />
                        LOGFONT lf;<br />
                        lf.lfHeight = 20;<br />
                        lf.lfItalic = TRUE;<br />
                        lstrcpy(lf.lfFaceName, "Time New Roman");<br />
                        lf.lfWeight = FW_HEAVY;<br />
                        HFONT gh = CreateFontIndirect(&lf);;<br />
                        SelectObject(pNMTVCD->nmcd.hdc, &gh);<br />
                        return CDRF_DODEFAULT;<br />
			//return (CDRF_NOTIFYPOSTPAINT | CDRF_NEWFONT);<br />
                }		}<br />
<br />
        }<br />
        return 0;<br />
}<br />
<br />

Thank to everybody very much in advance..

Re: Fonts for CTreeCtrl. What is not right now?

Michael Dunn7-Feb-05 6:56

Michael Dunn

7-Feb-05 6:56

What do you mean they "do not work"? Why are you creating a new font every single time? Have you checked your return values? (specifically that of CreateFontIndirect())

--Mike--
LINKS~! Ericahist updated! | 1ClickPicGrabber | CP SearchBar v2.0.2 | C++ Forum FAQ
Strange things are afoot at the U+004B U+20DD

Re: Fonts for CTreeCtrl. What is not right now?

bilas7-Feb-05 7:31

bilas

7-Feb-05 7:31

You are right. I simply tried to create font every time. I'll do it another way, now I only want it to work. Sniff | :^)

VS 7.1 C++ and code profiling tools [modified]

Antony M Kancidrowski7-Feb-05 5:15

Antony M Kancidrowski

7-Feb-05 5:15

Does anyone have any suggestions on a C++ code profiler that works well with VS 7.1

I used to use TrueTime quite a while ago. Any suggestions would be most appreciated.

Thanks

Ant.

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

Re: VS 7.1 C++ and code profiling tools [modified]

Neville Franks7-Feb-05 8:58

Neville Franks

7-Feb-05 8:58

I assume Glowcode will work with VS7 but haven't tried it. It works well for me with VC6. See www.glowcode.com[^]

Neville Franks, Author of ED for Windows www.getsoft.com and Surfulater www.surfulater.com "Save what you Surf"

Re: VS 7.1 C++ and code profiling tools [modified]

Antony M Kancidrowski7-Feb-05 11:53

Antony M Kancidrowski

7-Feb-05 11:53

Thanks, I have downloaded a trial version and will evaluate it. My initial thoughts are that it is pretty good.

Ant.

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

How to delete a handle return by Microsoft function?

mk_le7-Feb-05 4:10

mk_le

7-Feb-05 4:10

Hi,

aHandle = MyTree.InsertItem(....);

=> to create a new element into my treeview. My question is : how to delete this handle created by Microsoft function? When i try delete it by "delete aHandle" => it returns a warning message "warning C4150: deletion of pointer to incomplete type '_TREEITEM'; no destructor called".

Thank you.

Re: How to delete a handle return by Microsoft function?

Maximilien7-Feb-05 4:41

Maximilien

7-Feb-05 4:41

it's only a handle to the inserted item, no need to do anything with it; BUT you will need to delete the tree item later on ( I'm too lazy to look and see if the tree items are automatically freed/deleted when deleting the tree ).

Maximilien Lincourt
Your Head A Splode - Strong Bad

Re: How to delete a handle return by Microsoft function?

2249177-Feb-05 21:41

224917

7-Feb-05 21:41

Are you sure the handle was created using the operator new Smile | :)

suhredayan
There is no spoon.

Re: How to delete a handle return by Microsoft function?

mk_le9-Feb-05 2:16

mk_le

9-Feb-05 2:16

The handle is returned by Microsoft function InsertItem(...). This function create a new item and return it handle. I had try to delete this handle by "delete", "free" and "CloseHandle" but it does not work at all.

Composite Control

Liger_Zero_X7-Feb-05 3:58

Liger_Zero_X

7-Feb-05 3:58

hi guys,

hope that you can help me with this one... i have created an ATL Project (server) as a .DLL type of file. I added some Composite Controls inside. the project is already functional but my main problem is that, when i tried to view the page through the client side, the composite control doesn't load with the page... what can i do??? can you pls provide sample codes, tnx in advance... Big Grin | :-D

Re: Composite Control

Liger_Zero_X7-Feb-05 5:55

Liger_Zero_X

7-Feb-05 5:55

by the way, im using VC++ 6.0... Big Grin | :-D

Active X

racing577-Feb-05 3:36

racing57

7-Feb-05 3:36

i have written an active x control. it is a windowless control, the problem is, if i try to use the control in a VB program the m_hWnd variable in the control is a NULL value, if i use the control in a VC++ program the varible is ok. the problem is i need to use some other controls such as a Timer, but when run from VB the control crashes when the SetTimer function is called... i have read that i need to create a control container but cant find anywhere that really explains it ??

any help would be greatly appreciated

Thanks.

Confused | :confused:

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