|
You would need to get the selected item first, it could either be on the tree or in the list.
If it's in the tree use CTreeCtrl::GetSelectedItem. If this function returns null it means nothing was selected in the tree. on the other hand if CListCtrl::GetFirstSelectedItemPosition returns NULL it also means that nothing was selected in the list control. Since you now know that the item is selected in the tree/list you can delete that item.
Hope that deletion won't be a problem for you. It would only be of how to get the selected item from the list or the tree 
Somethings seem HARD to do, until we know how to do them.
 _AnShUmAn_
|
|
|
|
|
No actually the problem is when i click on parent item it get selected and then i go and select list control item and then press delete....
now what happens is as i check that is any item is selected from tree control it returns that parent item now how can i do it?/
|
|
|
|
|
ok. in that case you can keep the index of clicked item stored in some member variable and use it while deleting
Somethings seem HARD to do, until we know how to do them.
_AnShUmAn_
|
|
|
|
|
 I think u can try with this :-
try using GetCurSel() function.
use the Dlgitem's object & GetCurSel() to select the Currently selected one then delete it !!
Vickyy
|
|
|
|
|
Hi frinds
i am making a project(Library management system) in MFC Dialog based application and want to include analog clock in my projct.
Please help me in this regard
Ahsan Shah
Ahsan
|
|
|
|
|
Did you know that you can search on articles on CP ? This[^] is the first result to a search for 'Analog clock'.
|
|
|
|
|
you would need to create your own clock or need some third party control. See here[^] and here[^] for examples
Somethings seem HARD to do, until we know how to do them.
_AnShUmAn_
|
|
|
|
|
|
i want to include analoge clock in c++6.0 in dialod Based application
|
|
|
|
|
Hi All
i want to make a backup file which is like this [code]Copy From System to USB or USB to Sustem[/code]. I am able to monitor a usb device. So plz help me
|
|
|
|
|
you can use file copying.
Here you can copy all files of USB to System and vice-versa.
so take a look for file copying.
IN A DAY, WHEN YOU DON'T COME ACROSS ANY PROBLEMS - YOU CAN BE SURE THAT YOU ARE TRAVELLING IN A WRONG PATH
|
|
|
|
|
See my problem i don't want to write a file or folder in USB. I want to make a backup file means when some one copy a file or folder then it make a backup folder also.If you know something about it then plz tell me.how can i do becouse your first post is not use for me..
|
|
|
|
|
you already said that u able to USB monitoring.
i just want to told u that, create a logic when you monitor a USB and get any information or alert for copying data then you can also copy that data at temporary location.
IN A DAY, WHEN YOU DON'T COME ACROSS ANY PROBLEMS - YOU CAN BE SURE THAT YOU ARE TRAVELLING IN A WRONG PATH
|
|
|
|
|
Hi, I'm trying to get into C++ and I was wondering about the class and method names.
I'm hailing from C#, where everything is written fully and all names are immediately comprehensible.
However, it seems in C++ mostly abbreviations are being used. Is there any good reason for this or is that just because C++ has been around since long before Intellisense, so it's just a matter of convenience?
Thanks.
|
|
|
|
|
ya! it's only a matter of convenience to avoid long variable names and distinguishing them from being local or member variables. for example there is oneHungarian Notation[^] that can be followed. If you feel that the people who follow you, should understand the code by just having a glimpse at it, it would be better to use a notation. on an ending note - > If you use your own:DOCUMENT IT VERY CAREFULLY.
Somethings seem HARD to do, until we know how to do them.
_AnShUmAn_
|
|
|
|
|
It's not specific to C++. Different projects use different naming conventions, so depending on whose code you look at it will vary greatly. It's really a matter of preference. The C++ standard library comes all in one single namespace called std that deals with basic stuff like string manipulation, lists etc., whereas the .NET API pretty much wraps the entire OS API. The C++ library can get away with much shorter names since its feature set is very limited and defined, whereas .NET needs means to organize all that stuff, and it does so by using tons of nested namespaces, which results in much longer symbol names overall.
I agree that most STL class names are not necessarily immediatly comprehensible and are thus not really a good example to follow in terms of naming conventions. Nor are the MFC, which were conceived before design patterns, templates, and namespaces had reached the real world, plus they are massively influenced by the Windows API naming conventions and are overall much closer to a C library than to a modern C++ library.
My advice is to be as verbose as you need to be but as short as you can be without sacrificing clarity. The time you save when you use cryptic abbreviations is far less than the time it is going to cost when someone has to fix a bug in that code, or even just understand what it does.
If you want an example of what readable C++ code with good coding conventions and modern design looks like, check out the open source FreeCloth project. Reading through that code really changed the way I had been thinking about a few things.
Hope this helps,
Peter
|
|
|
|
|
|
Hi,
I've got this problem and I can't solve it - I either have to rescale the image or somehow make the printer use page size equal to the image size - it should be able to do so, it's a virtual printer and not constrained by real paper sizes.
I think that using SetMapMode on the printer HDC can make it fit into the page size (like an implicit rescaling) but I don't know how to do it.
So is there any way to avoid this clipping? Any help would be greatly appreciated.
Here is the code I use (it makes clipped images):
ULONG_PTR m_gdiplusToken;
Gdiplus::GdiplusStartupInput gdiplusStartupInput;
Gdiplus::GdiplusStartup(&m_gdiplusToken, &gdiplusStartupInput, NULL);
Image* img = Image::FromFile(wstrFileName);
HDC hPrinterDC;
hPrinterDC = CreateDC("WINSPOOL\0", szVirtPrn, NULL, NULL);
if (hPrinterDC)
{
DOCINFO di = {0};
memset( &di, 0, sizeof(DOCINFO) );
di.cbSize = sizeof(DOCINFO);
di.lpszDocName = "DocName";
di.lpszOutput = (LPTSTR) NULL;
di.lpszDatatype = (LPTSTR) NULL;
di.fwType = 0;
int nResult = StartDoc(hPrinterDC, &di);
if (nResult > 0)
{
nResult = StartPage(hPrinterDC);
if (nResult > 0)
{
Graphics* g = Graphics::FromHDC(hPrinterDC);
g->DrawImage(img, 0, 0);
nResult = EndPage(hPrinterDC);
}
}
nResult = EndDoc(hPrinterDC);
DeleteDC(hPrinterDC);
}
There is sufficient light for those who desire to see, and there is sufficient darkness for those of a contrary disposition.
Blaise Pascal
|
|
|
|
|
sashoalm wrote: g->DrawImage(img, 0, 0);
This will draw the image from 0,0 to actual image size. May be you want to use some other version of DrawImage() where you can specify destination rectangle. I hope it makes sense.
Regards,
Sandip.
|
|
|
|
|
I'm trying to avoid any rescaling done with GDI+ because it might affect image quality.
Anyway I've come to a partial solution. This code
SIZE paper_size = { GetDeviceCaps(hPrinterDC, HORZRES), GetDeviceCaps(hPrinterDC, VERTRES) };
SIZE image_size = { img->GetWidth(), img->GetHeight() };
SetMapMode(hPrinterDC, MM_ANISOTROPIC);
SetWindowExtEx(hPrinterDC, image_size.cx, image_size.cy, NULL);
SetViewportExtEx(hPrinterDC, paper_size.cx, paper_size.cy, NULL);
SetWindowOrgEx(hPrinterDC, 0, 0, NULL);
seems to make it fit the page, but it doesn't preserve aspect ration. I did it with some sample code and trial and error.
There is sufficient light for those who desire to see, and there is sufficient darkness for those of a contrary disposition.
Blaise Pascal
modified on Tuesday, August 5, 2008 5:34 AM
|
|
|
|
|
If
sashoalm wrote: SIZE paper_size = { GetDeviceCaps(hPrinterDC, HORZRES), GetDeviceCaps(hPrinterDC, VERTRES) };
Is less than
sashoalm wrote: SIZE image_size = { img->GetWidth(), img->GetHeight() };
You are going to rescale your image anyway. So what you trying to achieve may be i am not following your problem properly.
Regards,
Sandip.
|
|
|
|
|
SandipG wrote: You are going to rescale your image anyway. So what you trying to achieve may be i am not following your problem properly.
Yes, i was saying that it's an alternative solution to what you suggested. this code is there to make the rescaling instead of calling GDI+ functions. but it doesn't preserve aspect ratio, so there's more to be done here...
There is sufficient light for those who desire to see, and there is sufficient darkness for those of a contrary disposition.
Blaise Pascal
|
|
|
|
|
sashoalm wrote: but it doesn't preserve aspect ratio, so there's more to be done here...
For all these issues i think you should try GDI+ rescaling and check the quality. If you still dont want to use GDI+ resampling then there are some good articles on CP regarding it. Here is one by great CPallini http://www.codeproject.com/KB/GDI/plain_c_resampling_dll.aspx[^]
Regards,
Sandip.
|
|
|
|
|
Hello Friends.
I want to made an exe file in c++/MFC that reads from an autorun.inf file. Now if the format of autorun.inf is ASCII, then it can't be read correctly by our exe. if its format is unicode, then it displays the correct information.
Now generally the format of autorun.inf/autorun.ini is ASCII. My problem is that i want to convert the format of "autorun.inf" from ASCII to Unicode manually. i search for this on different forums but i can't get any help.
Can any body help me. I shall be very thankful to all of You.
Thanx in Advance. 
|
|
|
|
|
General 
News 
Suggestion 
Question 
Bug 
Answer 
Joke 
Praise 
Rant 
Admin 
Submit an article or tip
