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This is a more understandable form:
std::fill(v.begin(),v.end(),false); Nevertheless, the latter is less advisable in some pedantic subtle way, namely that std::vector::assign could be partially specialized to perform faster on some primitive types (not that VC++ does it, anyway.)
Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo
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more understandable, and safer...
it's pretty easy to see memset flying off the end of the vector and writing into the stack somewhere. 
-c
To explain Donald Knuth's relevance to computing is like explaining Paul's relevance to the Catholic Church. He isn't God, he isn't the Son of God, but he was sent by God to explain God to the masses.
/. #3848917
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?? Maybe you have misread the guy's question. He was asking about the suitability of
m_abMatched::assign(m_abMatched.size(), false) as a replacement of memset. And this (assign) is perfectly safe.
Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo
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Hello,
I have a few questions I'd like to ask and see if anybody knows anything about this.
First of all, my MDI project starts with an open window. This is great. I want this window to be uncloseable. How do I disable the X (close) button? I want this window never to close.
Second, I get live images in one window, but I'd like to snap and have the image appear in a new window. Right now, the snap appears in the same type of window, so the same type of options apply to it (chaning the contrast or brightness or any example you can think of). I want the snap window to have a different set of avaible drop down options (i.e. I'd like to make some grayed out or unusable).
So I am thinking using a new document template would be the way to go here.
What do you guys think about that? And if you could answer how to gray out the options and how to make sure my first window never closes, I'd sure like to know how to do that. Pleas let me know if I am on the right track with using a new Document Template.
Thanks guys,
NickOne
You guys rock!
p.s. How can I tell if there is a memory leak? Sometimes my program, when I try to close the window crashes and becomes unresponsive. This is a feature I sure don't like!!! Any ideas?
Thanks again!!
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NickWhoForgotHisPasswordToLogIn wrote:
NickWhoForgotHisPasswordToLogIn
Lookup your password here
Jon Sagara
"Me fail English? That's unpossible."
"Hello Supernintendo Chalmers. I'm lernding."
--- Ralph Wiggum ---
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In response to your p.s., memory leaks do not usually manifest the way you describe. In debug mode, MFC apps come with a built-in leak detector: upon exiting, the leaks detected are reported to the debug output window of Visual Studio.
Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo
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Hi,
In my application I need to create an empty window just to receive messages and treat them. I wrote the following code:
HINSTANCE hApi = (HINSTANCE) GetModuleHandle(NULL);
if (! hApi) ...// manage error
CHAR * WindowClassName = "MyWindowClass";
WNDCLASS WindowClassInfo;
if (! GetClassInfo(hApi, WindowClassName, &WindowClassInfo))
{
WindowClassInfo.hCursor = NULL;
WindowClassInfo.hIcon = NULL;
WindowClassInfo.lpszMenuName = NULL;
WindowClassInfo.lpszClassName = WindowClassName;
WindowClassInfo.hbrBackground = NULL;
WindowClassInfo.hInstance = hApi;
WindowClassInfo.style = CS_OWNDC | CS_VREDRAW | S_HREDRAW;
WindowClassInfo.lpfnWndProc = (WNDPROC) MyProc;
WindowClassInfo.cbClsExtra = 0;
WindowClassInfo.cbWndExtra = 0;
if (! RegisterClass(&WindowClassInfo)) ...//manage error
}
HWND hWnd = CreateWindow(WindowClassName,
"MyWindow",
WS_OVERLAPPEDWINDOW,
0,
0,
CW_USEDEFAULT,
CW_USEDEFAULT,
NULL,
NULL,
hApi,
NULL);
if (! hWnd) ...//manage error
But, unfortunately, CreateWindow return NULL and GetLastError return 0 !!!
Did anybody could help me ?
Thanks in advance.
Robin.
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Everything seems OK. The only possible problem I can think of is that MyProc is not properly declared as a WINDPROC should. Could you show us this function?
Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo
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MyProc is declared in a header as following:
LRESULT CALLBACK fidLinkEventProc(HWND _hWnd, UINT _iMsg, WPARAM _wParam, LPARAM _lParam);
and MyProc is defined in a .c file:
LRESULT CALLBACK MyProc(HWND _hWnd, UINT _iMsg, WPARAM _wParam, LPARAM _lParam)
{
switch (_iMsg)
{
...
}
return 0;
}
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Try this, if it work, check your WindowProc function like Joaquim suggested:
LPCTSTR szWindowClassName = _T("MyWindowClass");
WNDCLASS WindowClassInfo;
if (!GetClassInfo(hApi,szWindowClassName, &WindowClassInfo))
{
WindowClassInfo.hCursor = NULL;
WindowClassInfo.hIcon = NULL;
WindowClassInfo.lpszMenuName = NULL;
WindowClassInfo.lpszClassName = szWindowClassName;
WindowClassInfo.hbrBackground = NULL;
WindowClassInfo.hInstance = hApi;
WindowClassInfo.style = CS_OWNDC | CS_VREDRAW | CS_HREDRAW;
WindowClassInfo.lpfnWndProc = (WNDPROC) ::DefWindowProc;
WindowClassInfo.cbClsExtra = 0;
WindowClassInfo.cbWndExtra = 0;
if (!RegisterClass(&WindowClassInfo))
{
TRACE( " ERROR \n");
}
}
HWND hWnd = CreateWindow(szWindowClassName,
"MyWindow",
WS_OVERLAPPEDWINDOW,
0,
0,
CW_USEDEFAULT,
CW_USEDEFAULT,
NULL,
NULL,
hApi,
NULL);
ASSERT( hWnd != NULL );
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Thank for your help. I solved my problem: MyProc was always returning 0 whatever the message was, whereas it has to treat Windows messages such as "WM_CREATE", ... (traditional messages to create a window).
Now, I use "return DefWindowProc(_hWnd,_iMsg,_wParam,_lParam)" when I receive a Windows message different from my messages.
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Hi! I'm new at Visual C++, and i was trying to use a CListBox with multicolumn features, but i cannot find a way to include the column's labels.
I guess this must be a easy task for most of you, but i'm really having dificulties in implementing this.
Can anyone help me? Please...
Thank you in advance
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Do you mean CListBox or CListCtrl? If the former, then all the columns of a single row are inserted at a time by calling AddString with a string where columns are separated by tab characters:
m_list.AddString("Column 1\tColumn 2\tColumn 3");
Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo
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Thank's Joaquín, i guess i'll use the CListCtrl once i need the headers to sort data, can you tell where to find some good examples how to use this object?
Thank you
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Here at CP. For instance, Matt Weagle's article Using the List Control.
Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo
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Hi,
I am deriving my class from CFileDialog. My application should open files with extension ".crm" only. The default extension is being restricted to ".crm". If the user enters wrong file extension, then I have to clear the file name in the 'FileName' edit box.
I am overriding the virtual function OnFileNameOK. But this function is getting called during Save but not during Open.
How can I clear the text in the edit box?
Thanks
Sreenivas
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Have a class that i derived from CWnd. I want to put a toolbar at the bottom of the window. Can somebody help me get started with this?
thanks
Scott
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there is an example in VC6.0 CD.
the example sets CToolBar on a dialog box, it must work on CWnd i think.
includeh10
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Found the example and got it working, thanks
Scott
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Hi all -
I'm looking for a way to automate a process I have right now. At the end of every month I need this to happen on my PC:
Open program
1. Hit enter 3 times (slight pause between each one)
2. Press “F7”
3. Enter password
4. Enter Date (hard Part because dates changes monthly) 07/01/02 next week would be 08/01/02 in this format (example: 07, tab, 02, return)
5. Press “Y” key
6. Press “5”
7. Press “1”
8. Press “enter”
9. Pause for 5min
10. Press “Esc” 3 times
That’s it. I would need this to work with DOS, NT, and 95/98. I normally work with Macs and on a Mac this work take to five min. to do. I’m hoping that’s the case for a PC. Anyways, I'm willing to pay the right person for this if you can send me a quote. I don't want to have to buy software like Quickeys (or I would use that to do it). I was thinking there has to be some kind of built in scripting software on these OS's.
The above process could change a little, but this should give you an idea.
Any help or direction would be great.
Thanks
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I am using the CFontDialog dialogbox to give the user different font options to choose from for their printed reports. They can choose different fonts for headings, dates, text etc. I am passing default values to the font dialog. Problem is that the font appears HUGE in the font dialogbox. I'm am using the MM_LOMETRIC mapping mode for my printer DC. Does this have something to do with things?
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I have a pdf file. I can convert it into a bitmap or ps file or differnet formats.
If it's a bitmap, I can print the bitmap and at the same time print text on top of the bitmap.
The problem is, the bitmap doesn't print that clear.
If I have a pdf or ps file, how can I print that file from a dos command and at the same time send a command to print other text so that it prints text on top of the pdf file.
Please, any response any one can give me will be greatly appreciated.
Sincerely,
Danielle (an overworked graduate student)
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i need to embed a combobox inside a list control (each row of list box includes a combo box).
i hope the combo box has no border.
do u know how to create a combo box with no border?
thx
![Rose | [Rose]](https://codeproject.global.ssl.fastly.net/script/Forums/Images/rose.gif)
includeh10
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I created a dialog box which is for user to enter "File Directory" and "Start Vehicle Number". It contains the following:
1, Edit box for "File Directory"
2, Edit box for "Start Vehicle Number"
3, Button for "Done"
If the user hit "Done" when finished, both "File Directory" and "Start Vehicle Number" will be send to the parent window.
The problem is that when I hit "Enter" on the keyboard, "File Directory" will be NULL and "Start vehicle Number" is equal to 0.
Anyone please give me a suggestion on how to link "Enter" to "Done" button. Thank you!
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