LVN_GETDISPINFO and LVIF_DI_SETITEM - C / C++ / MFC Discussion Boards

frankis782-Oct-06 11:00

2-Oct-06 11:00

Hi Christian
Thanks for the replay

The reason why i need this information is that i am a chiptuner, that program my own software for car,
and now im going to make software that communicate with the cars mcu..
The language it self is one thing im reading on at moment, but my problem is mostley to know when to use the different settings in visual studio.
The normal standard communication protocoll in car is KWP2000,
I have seen that, many of these communication interfaces that i have uses dll, but i guess i can start building a win32app, that can communicate through an usb-interface, to cars mcu?

Any suggestion where to start?

Regards
Frank

Re: Description of different shortings

Christian Graus2-Oct-06 11:17

Christian Graus

2-Oct-06 11:17

If you want an app running on your PC, which then talks to the car via some communication protocol, you may want to look at using MFC. However, even C# is probably OK on the PC side, the key thing is getting the software right on the car end, which will probably be in C.

Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog

Re: Description of different shortings

frankis782-Oct-06 11:24

frankis78

2-Oct-06 11:24

oki, so then i maby use the mfcapp or mfcdll?

REGARDS
Frank

Re: Description of different shortings

Christian Graus2-Oct-06 11:26

Christian Graus

2-Oct-06 11:26

If you want to write a windows application, then MFC is easier than Win32. A dll is not a program, it's a library. If you want a program that runs, you need to create an exe.

Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog

Re: Description of different shortings

frankis782-Oct-06 11:41

frankis78

2-Oct-06 11:41

Oki
Thanks for youre help Smile | :)

Maby i need more help from you, or i can tune youre car Smile | :)

Regards Frank

Re: Description of different shortings

Christian Graus2-Oct-06 11:47

Christian Graus

2-Oct-06 11:47

*grin* thanks for the offer, but I suspect geography may get in the way of me taking it up...

Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog

Re: Description of different shortings

Hamid_RT1-Oct-06 21:06

Hamid_RT

1-Oct-06 21:06

What do you need?

WhiteSky

LVN_GETDISPINFO and LVIF_DI_SETITEM

Mohammad A Gdeisat1-Oct-06 10:59

Mohammad A Gdeisat

1-Oct-06 10:59

Hi,

I use a CListView as a virtual list in which I display a list of files and file information like size and type.

in the LVN_GETDISPINFO handler I add LVIF_DI_SETITEM to the item mask so that the control will not ask for the data twice for the same item, but it doesnt work at all! the control always asks for data whenever the displayed contents are changed.

I mask the LVIF_DI_SETITEM as follows:

pItem->mask|=LVIF_DI_SETITEM;

and my whole msg handler is as follows if u would like to have a look:

void CFileListView::OnGetdispinfo(NMHDR* pNMHDR, LRESULT* pResult) <br />
{<br />
	LV_DISPINFO* pDispInfo = (LV_DISPINFO*)pNMHDR;<br />
	// TODO: Add your control notification handler code here<br />
	CProdigyExplorerView *pView=(CProdigyExplorerView*)GetParent();<br />
	LV_ITEM* pItem= &(pDispInfo)->item;<br />
	pItem->mask|=LVIF_DI_SETITEM  ;<br />
	int itemid = pItem->iItem;<br />
	*pResult = 0;<br />
	///file info<br />
	CFileFolderInfo *pFI;<br />
	if(itemid > CFileFolderManager::m_Folders.GetUpperBound())<br />
		pFI = (CFileFolderInfo *)CFileFolderManager::m_Files[itemid-CFileFolderManager::m_Folders.GetUpperBound()-1];<br />
	else<br />
		pFI=(CFileFolderInfo *)CFileFolderManager::m_Folders[itemid];<br />
	//////<br />
	if (pItem->mask & LVIF_TEXT)<br />
    {<br />
		if(pView->m_lstFiles.GetHeaderText(pItem->iSubItem)==_T("Filename"))<br />
		{<br />
			wcsncpy(pItem->pszText,pFI->m_Attributes.cFileName,pItem->cchTextMax);<br />
		}<br />
		else if(pView->m_lstFiles.GetHeaderText(pItem->iSubItem)==_T("Size"))<br />
		{<br />
			CString strSize = CFileFolderManager::FormatFileSize(pFI->m_Attributes.nFileSizeHigh,pFI->m_Attributes.nFileSizeLow,0);<br />
			wcsncpy(pItem->pszText, (LPCTSTR)strSize,pItem->cchTextMax);<br />
		}<br />
		else if(pView->m_lstFiles.GetHeaderText(pItem->iSubItem)==_T("Type"))<br />
		{<br />
<br />
		}<br />
		else if(pView->m_lstFiles.GetHeaderText(pItem->iSubItem)==_T("Created"))<br />
		{<br />
			CString strTime = CFileFolderManager::FormatFileTime(pFI->m_Attributes.ftCreationTime,FALSE);<br />
			wcsncpy(pItem->pszText,(LPCTSTR)strTime,pItem->cchTextMax);<br />
		}<br />
		else if(pView->m_lstFiles.GetHeaderText(pItem->iSubItem)==_T("Modified"))<br />
		{<br />
			CString strTime = CFileFolderManager::FormatFileTime(pFI->m_Attributes.ftLastWriteTime,FALSE);<br />
			wcsncpy(pItem->pszText,(LPCTSTR)strTime,pItem->cchTextMax);<br />
		}<br />
		else if(pView->m_lstFiles.GetHeaderText(pItem->iSubItem)==_T("Accessed"))<br />
		{<br />
			CString strTime = CFileFolderManager::FormatFileTime(pFI->m_Attributes.ftLastAccessTime,FALSE);<br />
			wcsncpy(pItem->pszText,(LPCTSTR)strTime,pItem->cchTextMax);<br />
		}<br />
	}<br />
<br />
	//////////////////////////////////////////<br />
	//////////ICONS////////////////////////<br />
	if( pItem->mask & LVIF_IMAGE) <br />
    {<br />
	<br />
		if(pView->m_iLVStyle != LVS_ICON)<br />
		{<br />
			if(pFI->m_iSmallIconIndex!=-1)<br />
			{<br />
				pItem->iImage=pFI->m_iSmallIconIndex;<br />
				return;<br />
			}<br />
			int iIconIndex;<br />
			CString strExtension=CFileFolderManager::GetFileExtension((CString)pItem->pszText);<br />
			if((iIconIndex=pView->GetTypeIconSmall(strExtension))==-1	//no icon in the list<br />
				|| strExtension==_T("exe") ||strExtension==_T("lnk")|| pFI->m_Attributes.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)<br />
			{<br />
				SHFILEINFO fi;<br />
				SHGetFileInfo(pView->m_strCurrentPath + pItem->pszText,pFI->m_Attributes.dwFileAttributes,&fi,sizeof(fi),SHGFI_USEFILEATTRIBUTES |SHGFI_ICON| /*SHGFI_TYPENAME|*/SHGFI_SMALLICON);<br />
				<br />
				pItem->iImage=pView->m_ilLVIconsSmall.Add(fi.hIcon);<br />
				<br />
				pView->m_hIcons.Add(fi.hIcon);<br />
				pFI->m_iSmallIconIndex = pItem->iImage;<br />
				if(!(pFI->m_Attributes.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY))//store extension if not a folder<br />
				{<br />
					IconType IT;<br />
					IT.m_Extension=strExtension;<br />
					IT.m_IconIndex=pItem->iImage;<br />
					pView->m_IconTypeSmall.Add(IT);<br />
				}<br />
				<br />
			}<br />
<br />
			else	//This file type already has an icon index in m_IconType<br />
			{<br />
				pItem->iImage=iIconIndex;<br />
				pFI->m_iSmallIconIndex = iIconIndex;<br />
			<br />
			}<br />
			CString str;<br />
			str.Format(_T("%d"),pView->m_ilLVIconsSmall.GetImageCount());<br />
			GetParent()->GetParent()->SetWindowText(str);<br />
		<br />
		}//end of small icon handler<br />
		if(pView->m_iLVStyle == LVS_ICON)<br />
		{<br />
			if(pFI->m_iLargeIconIndex!=-1)<br />
			{<br />
				pItem->iImage=pFI->m_iLargeIconIndex;<br />
				return;<br />
			}<br />
			<br />
			int iIconIndex;<br />
			CString strExtension=CFileFolderManager::GetFileExtension((CString)pItem->pszText);<br />
			if((iIconIndex=pView->GetTypeIconLarge(strExtension))==-1	//no icon in the list<br />
				|| strExtension==_T("exe") ||strExtension==_T("lnk")|| pFI->m_Attributes.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)<br />
			{<br />
				IconType IT;<br />
				IT.m_Extension=strExtension;<br />
				SHFILEINFO fi;<br />
				<br />
				SHGetFileInfo(pView->m_strCurrentPath + pItem->pszText,pFI->m_Attributes.dwFileAttributes,&fi,sizeof(fi),SHGFI_USEFILEATTRIBUTES |SHGFI_ICON| /*SHGFI_TYPENAME|*/SHGFI_LARGEICON);<br />
				<br />
				IT.m_IconIndex=pItem->iImage=pView->m_ilLVIconsLarge.Add(fi.hIcon);<br />
				pView->m_IconTypeLarge.Add(IT);<br />
				pView->m_hIcons.Add(fi.hIcon);<br />
				pFI->m_iLargeIconIndex= IT.m_IconIndex;<br />
				<br />
			}<br />
<br />
			else	//This file type already has an icon index in m_IconType<br />
			{<br />
				pItem->iImage=iIconIndex;<br />
				pFI->m_iLargeIconIndex= iIconIndex;<br />
			<br />
			}<br />
			CString str;<br />
			str.Format(_T("%d"),pView->m_ilLVIconsLarge.GetImageCount());<br />
			GetParent()->GetParent()->SetWindowText(str);<br />
		<br />
		}//end of small icon handler<br />
		<br />
	}

And ever has it been that love knows not its own depth until the hour of separation

Creating a file association with VC++

Mohammad A Gdeisat1-Oct-06 10:51

Mohammad A Gdeisat

1-Oct-06 10:51

hi,

I want to create a file association programmatically using vc++, for example, I want to associate '.txt' files with myprogram.exe.

are there any api functions to do this?

Mohammad

And ever has it been that love knows not its own depth until the hour of separation

Re: Creating a file association with VC++

Christian Graus1-Oct-06 15:19

Christian Graus

1-Oct-06 15:19

Not sure if there are any directly, but the file associations are stored in the registry, you can use registry APIs to set them up.

Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog

Re: Creating a file association with VC++

Mohammad A Gdeisat2-Oct-06 7:44

Mohammad A Gdeisat

2-Oct-06 7:44

Thanks,

but when I change these settings from registry will the settings take effect immediately or do I need to restart windows or restart windows explorer??

I need a method that takes effects immediately.

Thanks alot

And ever has it been that love knows not its own depth until the hour of separation

Re: Creating a file association with VC++

Mark Salsbery4-Oct-06 15:07

Mark Salsbery

4-Oct-06 15:07

http://windowssdk.msdn.microsoft.com/en-us/library/ms649637.aspx[^]

No you don't have to restart Windows or Explorer.

Mark

Re: Creating a file association with VC++

Link20061-Oct-06 16:51

Link2006

1-Oct-06 16:51

haha, very easy.

1.) Right-click on the .txt file,
2.) Choose "Properties",
3.) Choose "Browse",
4.) Then choose your program name, ie. myprogram.exe

Enjoy

Re: Creating a file association with VC++

Hamid_RT2-Oct-06 9:40

Hamid_RT

2-Oct-06 9:40

Can you be more specific

WhiteSky

string convertions

Waldermort1-Oct-06 8:02

Waldermort

1-Oct-06 8:02

36 hours straight and my mind is starting to go blank. What is a quick and easy way to convert a string to a DWORD? The string is an 8 char representation of a hash value, I will use it as a key in the registry.

Re: string convertions

Waldermort1-Oct-06 8:45

Waldermort

1-Oct-06 8:45

wow, I didn't even realise this set of functions existed, and here's me thinking of bit shifting!!

dwKey = strtoul(key,0,16);

Win32 Window Boundry

beeejay1-Oct-06 6:44

beeejay

1-Oct-06 6:44

Hello

I am trying to keep a window within a certain bounding rect. So far I am capturing the WM_ENTERSIZEMOVE message within the window procedure and doing this:

boundry is the program defined rect that the user should stay within.
pt is the mouse POINT.
rect is the window RECt.

<br />
test.left = boundry.left + ( pt.x - rect.left );<br />
test.right = boundry.right - ( rect.right - pt.x );<br />
<br />
test.top = boundry.top + ( pt.y - rect.top );<br />
test.bottom = boundry.bottom - ( rect.bottom - pt.y );<br />
<br />
ClipCursor( &test );

There are a few problems that arise, one of them is that depending on where i grab the window, the resulting boundry rect is sometimes off by as much as a few pixels.

Whats the dilly?

Re: Win32 Window Boundry

Waldermort1-Oct-06 8:06

Waldermort

1-Oct-06 8:06

Didn't you ask this question the other day? And didn't I recomend using the WM_GETMINMAXINFO rather than trying to do it manually. And did it work?

Re: Win32 Window Boundry

beeejay1-Oct-06 8:11

beeejay

1-Oct-06 8:11

Yah I did, And no I couldn't get it to work properly. It was only working for the resizing of the window, not the moving. This is what i wrote:

<br />
<br />
	case WM_GETMINMAXINFO:<br />
<br />
<br />
		wndInfo = (MINMAXINFO *)lParam;<br />
<br />
		wndInfo->ptMaxPosition.x = boundry.left;<br />
		wndInfo->ptMaxPosition.y = boundry.top;<br />
<br />
		wndInfo->ptMaxSize.x = boundry.right - boundry.left;<br />
		wndInfo->ptMaxSize.y = boundry.bottom - boundry.top;<br />
<br />
		wndInfo->ptMaxTrackSize.x = boundry.right;<br />
		wndInfo->ptMaxTrackSize.y = boundry.bottom;<br />
<br />
		wndInfo->ptMinTrackSize.x = boundry.left;<br />
		wndInfo->ptMinTrackSize.y = boundry.top;<br />
<br />
		ret = 0;<br />
		break;

Was I missing somthing?

Re: Win32 Window Boundry

Waldermort1-Oct-06 8:21

Waldermort

1-Oct-06 8:21

Maybe this[^] will help you.

Re: Win32 Window Boundry

beeejay1-Oct-06 9:38

beeejay

1-Oct-06 9:38

Thanks for the article, It seems that only the resizing is being handled though, not the moving.

Re: Win32 Window Boundry

beeejay1-Oct-06 11:34

beeejay

1-Oct-06 11:34

Well I ended up going about it this way, now i just need to figure out how to stop the cursor from moving in the case that it goes within the if statements, any ideas?

case WM_SIZING:<br />
	case WM_MOVING:<br />
		winRect = (RECT *) lParam;<br />
<br />
		winWidth = winRect->right - winRect->left;<br />
		winHeight = winRect->bottom - winRect->top;<br />
<br />
		if ( winRect->left < boundry.left )<br />
		{<br />
			winRect->left = boundry.left;<br />
			if ( Msg == WM_MOVING ) winRect->right = winRect->left + winWidth;<br />
		}<br />
<br />
		if ( winRect->top < boundry.top )<br />
		{<br />
			winRect->top = boundry.top;<br />
			if ( Msg == WM_MOVING ) winRect->bottom = winRect->top + winHeight;<br />
		}<br />
<br />
		if ( winRect->bottom > boundry.bottom )<br />
		{<br />
			winRect->bottom = boundry.bottom;<br />
			if ( Msg == WM_MOVING ) winRect->top = winRect->bottom - winHeight;<br />
		}<br />
<br />
		if ( winRect->right > boundry.right )<br />
		{<br />
			winRect->right = boundry.right;<br />
			if ( Msg == WM_MOVING ) winRect->left = winRect->right - winWidth;<br />
		}<br />
		<br />
		counter++;<br />
		sprintf( buffer2, "In WM_SIZING/WM_MOVING this many times: %d", counter );<br />
		charCount = SetWindowText( hWnd, buffer2 );<br />
	<br />
		return true;

Thanks,
Ben.

Re: New To C++ Need Help With Button Code On Form Apps

toxcct1-Oct-06 7:03

toxcct

1-Oct-06 7:03

you're asking for Managed C++.

ask this in the C++/CLI forum[^] instead.

TOXCCT >>> GEII power

[VisualCalc 3.0 updated ][Flags Beginner's Guide new! ]

Re: New To C++ Need Help With Button Code On Form Apps

Hamid_RT1-Oct-06 7:26

Hamid_RT

1-Oct-06 7:26

Hi toxcct,
Wheres question? Big Grin | :-D

WhiteSky

unresolved external symbol

marwa_fci1-Oct-06 5:14

marwa_fci

1-Oct-06 5:14

When i try to make an object from the CGridCtrl class as follows: CGridCtrl grid;
I get this error:
"unresolved external symbol "public: __thiscall CGridCtrl::CGridCtrl(int,int,int,int)" (??0CGridCtrl@@QAE@HHHH@Z) referenced in function "public: void __thiscall CSpreadSheetView::CreateGrid(void)" (?CreateGrid@CSpreadSheetView@@QAEXXZ)"
How could this be solved?

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