How to avoid from ListCtrl flickering??? - C / C++ / MFC Discussion Boards

bugDanny13-Jul-05 5:55

13-Jul-05 5:55

Try exiting the dialog using EndDialog(). Also, sometimes it is helpful to look at the code the error message is pointing you to, in this case winhand.cpp/line 229. And by the way,

Halawlaws wrote:
Then, the software exit like it is suppose too

The software is not exiting like it is supposed to. The software is aborting becuase of a debug assertion failure. If, for example, when exiting this dialog you were supposed to return to another part of the program, your software would still completely exit.

I can't tell anything more without actually seeing some of your code. Hope this helps!

Danny

Re: "Debug Assertion Failed!"

Halawlaws13-Jul-05 20:16

Halawlaws

13-Jul-05 20:16

Hey Dany thx man EndDialog(0) worked my program is now perfect but i still didn't know why this assertion problem occured

regards
Halawlaws

How to set different titles for views of the same document

Yaron Abershitz13-Jul-05 4:03

Yaron Abershitz

13-Jul-05 4:03

Hi there,
I have in my application a window in which I open files for edit. I present them in a tab style when there is more than one window open (similar to the source browser window in Visual Studio). what I'm trying to do is changing the name of the tab for views which are of the same document. Unfortunatly, I have no success till now.
First I try SetTitle() but ofcaurse that causes to all of the tab titles related to the same document to be changed.
Then I tried to do the following steps:
I add in
1. CChildFrame::PreCreateWindow(CREATESTRUCT &cs) :
cs.style&=~(LONG)FWS_ADDTOTITLE;
2. CMyView::OnInitialUpdate() :
GetParent()->SetWindowText("temp");
but it made no effect on the title.

How can I change the title of those tabs ? From where those tabs take the data for the title ?

I really need your help here,
thanks,
yaron.

Re: How to set different titles for views of the same document

Jose Lamas Rios13-Jul-05 7:42

Jose Lamas Rios

13-Jul-05 7:42

Try overriding OnUpdateFrameTitle (undocumented) in your CChildFrame. Look at the standard implementation of CMDIChildWnd::OnUpdateFrameTitle in MFC source files to get a hint on how to implement it.

Hope that helps,

--
jlr
http://jlamas.blogspot.com/[^]

Problem With Date Conversion

astien13-Jul-05 4:00

astien

13-Jul-05 4:00

Hello,

I have a CString variable with a date and i want to extract the day.

My problem is that i don't know the regional settings of the machine (for example if date is yyyy-mm-dd or dd-mm-yyyy) so i can't use for example .left(2)

I want to know if i can access to the regional setting format date in C++ or how to convert a CString into a date.

Thanks

Re: Problem With Date Conversion

basementman13-Jul-05 4:50

basementman

13-Jul-05 4:50

Using the win32 api, you could do something like this snippet here:

char caData[256];

caData[0] = 0;
GetLocaleInfo(LOCALE_SYSTEM_DEFAULT,LOCALE_SSHORTDATE,caData,sizeof(caData)-1);
m_cShortDateFormat = CString(caData);

char *p = caData;
while (*p && *p == ' ')
  p++;

switch (*p)
  {
    case 'd':
      m_cClientFormValidationDateFormat = "D/M/Y";
      break;
    case 'Y':
      m_cClientFormValidationDateFormat = "Y/M/D";
      break;
    case 'M':
    default:
      m_cClientFormValidationDateFormat = "M/D/Y";
      break;
  }

onwards and upwards...

Re: Problem With Date Conversion

David Crow13-Jul-05 5:39

David Crow

13-Jul-05 5:39

Something like:

CString strDate;
COleDateTime date;
date.ParseDateTime(strDate, VAR_DATEVALUEONLY);
TRACE("Day = %d\n", date.GetDay());

"Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

How to avoid from ListCtrl flickering???

eli1502197912-Jul-05 23:17

eli15021979

12-Jul-05 23:17

Hi,
I'm using ClistCtrl to display some data I'm receiving.
I need to display only the updated data,so the old data will disappear when there is new data to display(i get new data every 200msec).
The problem is that my ListCtrl is flickering when I'm calling
MyList.DeleteAllItems() function(I'm doing it with timer event).

How can I avoid this annoying flickering?

With best regards,
Eli

Re: How to avoid from ListCtrl flickering???

Neelesh K J Jain13-Jul-05 1:29

Neelesh K J Jain

13-Jul-05 1:29

Instead of using DeleteAllItems(), use CustomDraw message handler and in that one include to DeleteAllItems() and insert the new data.

Neelesh K J Jain.

Re: How to avoid from ListCtrl flickering???

eli1502197913-Jul-05 2:02

eli15021979

13-Jul-05 2:02

Hi Neelesh,

Thanks for your prompt reply.
Do you have any example how to do this?
How should I use the CustomDraw message handler?

Regards,
Eli

Re: How to avoid from ListCtrl flickering???

Neelesh K J Jain13-Jul-05 2:09

Neelesh K J Jain

13-Jul-05 2:09

Eli,
you can see the article "Dynamically Highlight Elements in a List Control" at http://www.codeproject.com/listctrl/highlightlistctrl.asp

Neelesh K J Jain

Re: How to avoid from ListCtrl flickering???

David Crow13-Jul-05 2:59

David Crow

13-Jul-05 2:59

How about a call to SetRedraw() before and after the insert/delete operations?

"Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

Re: How to avoid from ListCtrl flickering???

Jack Puppy13-Jul-05 2:59

Jack Puppy

13-Jul-05 2:59

I'd try this first:

SetRedraw

If you still get flicker, try drawing offscreen:

Flicker free drawing of any control

Pssst. You see that little light on your monitor? That's actually a government installed spy camera. Smile and wave to big brother!

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Re: How to avoid from ListCtrl flickering???

Bert [Otherside82] Derijckere13-Jul-05 3:04

Bert [Otherside82] Derijckere

13-Jul-05 3:04

You can disable the painting on the list control with SetRedraw(FALSE);
I'm using this technique when updating my list controls.

m_lstCtrl.SetRedraw(FALSE);
m_lstCtrl.DeleteAllItems();
//Add all new items
...
m_lstCtrl.SetRedraw(TRUE);
//you might need this to force the redraw to happen faster:
//m_lstCtrl.UpdateWindow();

IMO this is easier than trying to implement Custom or Owner Draw

how to make the application starts with the system?

zhaopi12-Jul-05 23:13

zhaopi

12-Jul-05 23:13

I am trying to implement an mfc dialog based application which will start when the system starts up just like a windows service...

Re: how to make the application starts with the system?

Andrew Kirillov12-Jul-05 23:21

Andrew Kirillov

12-Jul-05 23:21

Hello

You can place your app path into registry under the key:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run

Andrew

Re: how to make the application starts with the system?

AntonlioX13-Jul-05 21:16

AntonlioX

13-Jul-05 21:16

Another Method is to place a shortcut of your application on the directory "startup"

AntonlioX

icon in task bar???

wasife12-Jul-05 19:57

wasife

12-Jul-05 19:57

I have made an application. Now i want to put its icon in the right corner of my task bar. How can i do that? Moreover, how can i display my own tooltip when i hover my mouse over that icon in the taskbar.

Re: icon in task bar???

khan++12-Jul-05 20:15

khan++

12-Jul-05 20:15

http://www.thecodeproject.com/shell/trayicons.asp[^]
It shows the systray icon when the app is minimized.

this is this.

Re: icon in task bar???

David Crow13-Jul-05 3:00

David Crow

13-Jul-05 3:00

See this thread.

"Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

troubles in making a filecopy program in visual c++

firebolt7712-Jul-05 19:43

firebolt77

12-Jul-05 19:43

hi all..I'm newbie in visual c++ and I'm trying to make a simple file copy program, but it doesn't work. Here is my source code:
#include<afx.h>
#include<stdio.h>

int main()
{
CFile m_LogFile,m_DataFile;
char* a=NULL;
m_DataFile.Open("E:/data.txt", CFile::modeRead|CFile::shareDenyNone);
try
{
m_LogFile.Open("E:/data1.txt", CFile::modeWrite|CFile::modeRead|CFile::modeCreate|CFile::modeNoTruncate|CFile::shareDenyNone);
m_LogFile.SeekToEnd();
}
catch(CException* e)
{
e->ReportError();
e->Delete();
}
m_DataFile.Read(a,m_DataFile.GetLength);
m_LogFile.Write(a,strlen(a));
return 0;
}

The message error said that the m_DataFile.Read(a,m_DataFile.GetLength); part is wrong, but when I change the 2nd parameter into fixed number(I tried 10 and 100), it generate other error. Can somebody help me?
thx

Re: troubles in making a filecopy program in visual c++

Christian Graus12-Jul-05 19:50

Christian Graus

12-Jul-05 19:50

I can't find it, but there is most certainly an API call you can make to copy a file, if you want to. In the meantime, m_DataFile.GetLength is a function pointer. m_DataFile.GetLength() is a function call.

Christian Graus - Microsoft MVP - C++

Re: troubles in making a filecopy program in visual c++

Aamir Butt12-Jul-05 20:40

Aamir Butt

12-Jul-05 20:40

It is CopyFile(...) Smile | :)

Einstein: "Two things are infinite: the universe and human stupidity; and I'm not sure about the the universe."

My Articles

Re: troubles in making a filecopy program in visual c++

Christian Graus13-Jul-05 12:18

Christian Graus

13-Jul-05 12:18

Thanks - I thought it was, but I did a google on CopyFile C++ and got no helpful links. Usually, MSDN is the first hit in a case like that.

Christian Graus - Microsoft MVP - C++

Re: troubles in making a filecopy program in visual c++

khan++12-Jul-05 19:58

khan++

12-Jul-05 19:58

1- Change m_DataFile.Read(a,m_DataFile.GetLength); to:
m_DataFile.Read(a,m_DataFile.GetLength());
because GetLength() is a function.

2- And also, you are using char* a = NULL;
You are not assigning any memory to it. It is a null pointer.
You can try this:
char* a = NULL;
a = m_DataFile.GetLength() + 1;
memset(a,0,m_DataFile.GetLength()+1);
Then read the file into it:
m_DataFile.Read(a,m_DataFile.GetLength());

this is this.

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