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Can anyone explain to me how to use struct variables w/ STL? I generated a struct variable and need to use it in a vector template. Thx,
Ralf.
ralf.riedel@usm.edu
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Shouldn't be a problem mate, unless you have hidden the default contructor or overloaded operator &.
<br />
<br />
struct thing<br />
{<br />
int i;<br />
};<br />
<br />
vector<thing> stuff;<br />
<br />
<br />
Ryan
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Hi,
I've got wierd problem with my back buffer. For some reason 1 time out of every 20 I BitBlt a buffer into the forground it will show corruption - bits of the image are shown in the wrong place. I don't have a GDI leak, but the error is still occuring.
So I create the buffer by this function which is called early:
void CJackVisualCtrl::RebuildBackBuffer()
{
CRect clientrect;
GetClientRect(&clientrect);
CClientDC dc(this);
m_BackBitmap.CreateCompatibleBitmap(&dc, clientrect.Width(), clientrect.Height());
}I then use this in a paint routine:
void CMyClass::Paint(CDC *dc)
{
......
if(m_BackBitmap.m_hObject == 0)
RebuildBackBuffer();
CDC backdc;
backdc.CreateCompatibleDC(dc);
CBitmap *oldbitmap = backdc.SelectObject(&m_BackBitmap);
dc->BitBlt(0, 0, contentrect.Width(), contentrect.Height(), &backdc, 0, 0, SRCCOPY);
backdc.SelectObject(oldbitmap);
backdc.DeleteDC();
}
The image is quite large - 800x600 pixels, and it's rendered quite regularly - 10fps; but it surprises me that this is a problem for a modern PC. Can anyone see anything wrong with my technique?
Joel Holdsworth
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While this does not directly answer your question, I wrote an tool a while back that I use when I get weird things happening with memory DC's and/or memory bitmaps. Simply place a ShowDC() call after every drawing operation that you do, and the problems show up in no time.
http://www.codeproject.com/tools/imageviewer.asp[^]
"You're obviously a superstar." - Christian Graus about me - 12 Feb '03
"Obviously ??? You're definitely a superstar!!!" mYkel - 21 Jun '04
Within you lies the power for good - Use it!
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I still think it's a nifty util btw.
Jeremy Falcon
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thx
"You're obviously a superstar." - Christian Graus about me - 12 Feb '03
"Obviously ??? You're definitely a superstar!!!" mYkel - 21 Jun '04
Within you lies the power for good - Use it!
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I have a question to all you guys,
am working on a Mfc Dialog application.The aim is to display properties of 4 different objects.
Decided to use a Tab Control,so that each tab identifying the properties to display for a object(so 4 tabs for 4 Objects.)
So Now My questions are starting
In Each Tab as I said ,want to fill the properties of a partcular object in a control.
In the control,I need to have 2 header columns.
The First column contains always constant labels.
In the second column,Depending on the left label,need to add a combobox,checkbox,Ediable Text box etc...
[1]I decided to use the ListView Control.How Can I add controls to the listview control,for each item
[2] How to change the background colour of the caption label in a CDialog object.
[3] How to change the font & Tab background colour of a particular tab in a TabControl
Appreciate it if someone could tell which concrete member function to use,showing with a code snippet.
Thanks..
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Maybe use Chris Maunders MFC Grid Control (available from CodeProject), one instance in each of your tabs.
It already does all this work for you.
Otherwise, look at what it does, as a starting point for the work you are about to duplicate.
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Have already progressed with the ClistCtrl from Mfc & Now I need to add combo boxes ,test boxes etc to the second coulmn od the list control.
How can I achieve that..
Can I use the "SetItemData" Function or should I use any other variation...
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What is typically done is a data set is tracked for each element in the list.
This data set can be a data structure, pointer to a class, whatever you want. It retains the user's item selection and generally what you would want to use in that cell, like some flag for combo box, list box, edit field, etc.
When the user 'selects' one of the cells, you create a window, on the fly, that covers the cell of interest. The focus is set to that window (the combo box, list box, or whatever) and the user makes a selection from it.
You then remove the small control window, then 'draw' in the selction into the item - if it is all text you want, that makes it easier, but some grids have bitmaps or other items, like progress bars and such - custom drawing stuff.
It is impractical to keep a separate window for every possible cell in a grid, so you only have a 'floating' child control for the cell currently being edited. Some people try to assign and create a seaprate control window for each cell int he grid, this limits how many rows and columns they can handle, as they lose ability to create even more windows.
Other than that, like I said, you are sort of duplicating the MFC grid control's efforts, so you might look to it for some examples.
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Where can I find this Chris Maunders MFC Grid Control.
Could u provide a link.
In my Mfc control list,I can't see a Grid Control ...
What should I do...
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It is available on this very same website.
http://www.codeproject.com/miscctrl/gridctrl.asp
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How can I find out the extension of the file pointed to by a shortcut? IShellLink::Resolve can do that, but it has a lot of overhead.
Basically, I'm going through the contents of a directory and only showing files of certain types, but I also want to show shortcuts which point to files of those certain types.
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Nevermind, figured it out: I use the normal COM code to find a shortcut's target, and just omit IShellLink::Resolve  .
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Hi all
i'm new to VC6++
I need to start work on Philips/MS Speech APIs
First let me know some self teaching good book on VC6++
Secondly how i can developed COM/Wrrapper For Philips VC6 API to be used in .NET envirnoment
just like we use MS word library.
Either i have to work on ATL Com Component project or on some else
Thansk in Advance
Regards
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>> i'm new to VC6++
Are you new to C++ or just the Microsoft Environment?
"No matter where you go, there your are." - Buckaroo Banzai
-pete
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Presently i'm working in .NET envirnoment and have a good Idead of Turbo C++ 3.0 and C language and JAVA too.
but as i started wor on speech Technologies specialy Philips , which has raw VisualC++ 6 API, So either i need to program it in VC or a way to create reusable component of whole API ewhich includes .lib,.h and dll files?
To get Alll let me know good book to start on developing COM component of API as we had COM component of MS WOrd
thanks
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I tried to hide a window B, and active window A, however, even though the dialog is hidden, the menubar belongs to B is still active, any solution for this? Thanks a lot!
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Some questions to clarify the issue..
How do you mean the menubar is active when you say the dialog is hidden?
How have you created and hidden the dialog and how have you attached the menu?
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Hi i'm trying to load a bitmap in a menu. I'm using this code, in the create function of the mainframe, but i'm not succesful:
[CODE]bmp.LoadBitmap(IDB_BITMAP2);
this->GetMenu()->GetSubMenu(2)->SetMenuItemBitmaps(1,MF_BYPOSITION,&bmp,&bmp);
[/CODE]
In the menu properties, the item number one, is checked.
what am i doing wrong?
thanks
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Have you cross-checked your code against any of the multitude of examples on http://www.codeproject.com/menu/[^]. If the code is ok, have you tried adding some error checking to see if any of the calls fails?
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>> struct fileHdr has member (first one) as a char* and its set to "ABCD".
So you are writing the value of the pointer to the file NOT the charcters. So the reading is not the problem it is the writing. Did you look at the file in Notepad to see if the "ABCD" was in there? 
"No matter where you go, there your are." - Buckaroo Banzai
-pete
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A named pipe is a named, one-way or duplex pipe for communication between the pipe server and one or more pipe clients. All instances of a named pipe share the same pipe name, but each instance has its own buffers and handles, and provides a separate conduit for client-server communication. The use of instances enables multiple pipe clients to use the same named pipe simultaneously.
Can anyone point me in the right direction for creating multiple named pipe of the same name and using multiple clients over it. i.e how do a client distinguish which pipe to connect if we have two pipes created in two process with the same name.
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One the Win32 platform, in theory instanses of the named pipe could be distinguished via handles. One the UNIX platform, consider, for example, a file descriptor.
Kuphryn
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