The main step is load “Iphlpapi.dll” with ::LoadLibary method and call ::GetProcAddress to get the “GetNetworkParams”.

Here is the full source:

The condition is only that the MessageBox window was created by MessageBoxA/MessageBoxW from the win32 api. Whether you call AfxMessageBox or CWnd::MessageBox in vc or MsgBox in vb, they finally call the ::MessageBoxA or ::MessageBoxW, so it also works.

Here is a example.

1. When some message box popped, press Ctrl+C to copy.

2. Paste in notepad, and you will see…

—————————
Notepad
—————————
The text in the Untitled file has changed.
Do you want to save the changes?
—————————
Yes No Cancel
—————————

You can give a look at the AdapterRAM attribute of Win32_VideoController.

The Win32_VideoController WMI class represents the capabilities and management capacity of the video controller. AdapterRAM is one of its attibute:

AdapterRAM
Data type: uint32
Access type: Read-only
Qualifiers: Units(Bytes)
Memory size of the video adapter.

Example: 64000

The full syntax is listed here:

class Win32_VideoController : CIM_PCVideoController
{
uint16 AcceleratorCapabilities[] ;
string AdapterCompatibility ;
string AdapterDACType ;
uint32 AdapterRAM ;
uint16 Availability ;
string CapabilityDescriptions[] ;
string Caption ;
uint32 ColorTableEntries ;
uint32 ConfigManagerErrorCode ;
boolean ConfigManagerUserConfig ;
string CreationClassName ;
uint32 CurrentBitsPerPixel ;
uint32 CurrentHorizontalResolution ;
uint64 CurrentNumberOfColors ;
uint32 CurrentNumberOfColumns ;
uint32 CurrentNumberOfRows ;
uint32 CurrentRefreshRate ;
uint16 CurrentScanMode ;
uint32 CurrentVerticalResolution ;
string Description ;
string DeviceID ;
uint32 DeviceSpecificPens ;
uint32 DitherType ;
datetime DriverDate ;
string DriverVersion ;
boolean ErrorCleared ;
string ErrorDescription ;
uint32 ICMIntent ;
uint32 ICMMethod ;
string InfFilename ;
string InfSection ;
datetime InstallDate ;
string InstalledDisplayDrivers ;
uint32 LastErrorCode ;
uint32 MaxMemorySupported ;
uint32 MaxNumberControlled ;
uint32 MaxRefreshRate ;
uint32 MinRefreshRate ;
boolean Monochrome ;
string Name ;
uint16 NumberOfColorPlanes ;
uint32 NumberOfVideoPages ;
string PNPDeviceID ;
uint16 PowerManagementCapabilities[] ;
boolean PowerManagementSupported ;
uint16 ProtocolSupported ;
uint32 ReservedSystemPaletteEntries ;
uint32 SpecificationVersion ;
string Status ;
uint16 StatusInfo ;
string SystemCreationClassName ;
string SystemName ;
uint32 SystemPaletteEntries ;
datetime TimeOfLastReset ;
uint16 VideoArchitecture ;
uint16 VideoMemoryType ;
uint16 VideoMode ;
string VideoModeDescription ;
string VideoProcessor ;
};

The first type of object you can retrieve is a WMI class. When retrieving a WMI class, you actually retrieve a class definition: that is, a listing of the properties, qualifiers, and methods that fully describe the class. However, a class definition is for all purposes the class itself.

To retrieve a class definition in VBScript

You can retrieve the class definition with the VBScript call GetObject, but do not specify a specific instance in the object path for the class.

The following code example retrieves the class definition for the class that describes logical drives on your computer. For information on the defaults that are being used, see Using Defaults for More Concise Code.

Visual Basic and VBScript support the following syntax:

Set objinst = GetObject(“WinMgmts:Win32_LogicalDisk”)

Windows Script Host also supports:

A class or instance can also be specified, in which case the returned object is a WMI object rather than a services object.

The GetObject function provided by VBScript and JScript cannot be used when running scripts embedded within an HTML page, as Microsoft® Internet Explorer disallows the use of this call for security reasons. This function also cannot be used to create an instance of the “generic” object SWbemObject.

Call the IWbemServices::GetObject or IWbemServices::GetObjectAsync methods to retrieve the definition of a class.

A single class can have multiple class definitions, usually when you have more than one class provider loaded into a single namespace. When a class has multiple class definitions, WMI returns the first definition discovered and the WBEM_S_DUPLICATE_OBJECTS status code.

struct IPicDrawer
{
virtual void GetSize(CSize&) = 0; // It’s the smallest size for EMF
virtual BOOL Draw(CDC*) = 0;
};

BOOL DrawEnhMeta(LPCTSTR lpszFileName, IPicDrawer *pIDrawer)
{
// Draw EMF file, the limitation of DC function refer to MSDN
HDC hDC = ::CreateEnhMetaFile(NULL, lpszFileName, NULL,
_T(“FQ EMF Func\0No Title\0″));
CDC *pDC = CDC::FromHandle(hDC);
if(pDC)
{
CSize sz;
pIDrawer->GetSize(sz);
pDC->FillRect(CRect(0,0,sz.cx,sz.cy), &CBrush(RGB(255,255,255)));
if(pIDrawer->Draw(pDC))
{
HENHMETAFILE hEmf = ::CloseEnhMetaFile(hDC);
if(hEmf)
{
::DeleteEnhMetaFile(hEmf);
return TRUE;
}
else
::DeleteFile(lpszFileName);
}
}
return FALSE;
}

BOOL DrawBitmap(LPCTSTR lpszFileName, IPicDrawer *pIDrawer)
{
// Draw 24 bit true color bitmap file
HANDLE hFile = ::CreateFile(lpszFileName, GENERIC_READ | GENERIC_WRITE,
0, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
BOOL bRet = FALSE;
if(hFile)
{
CSize sz;
pIDrawer->GetSize(sz);
BITMAPINFO BmpInfo = {0, }; //
BmpInfo.bmiHeader.biWidth = sz.cx;
BmpInfo.bmiHeader.biHeight = sz.cy;
BmpInfo.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
BmpInfo.bmiHeader.biPlanes = 1;
BmpInfo.bmiHeader.biBitCount = 24; // 24bit
BmpInfo.bmiHeader.biCompression = BI_RGB;
BmpInfo.bmiHeader.biSizeImage = BmpInfo.bmiHeader.biBitCount / 8 *
BmpInfo.bmiHeader.biWidth * BmpInfo.bmiHeader.biHeight;

BITMAPFILEHEADER bmpFileHeader = {0, }; //
bmpFileHeader.bfType = *(WORD*)_T(“BM”);
bmpFileHeader.bfOffBits =
sizeof(BITMAPFILEHEADER) + sizeof(BITMAPINFOHEADER);
bmpFileHeader.bfOffBits +=
sizeof(DWORD) – (bmpFileHeader.bfOffBits % sizeof(DWORD));
bmpFileHeader.bfSize = bmpFileHeader.bfOffBits + BmpInfo.bmiHeader.biSizeImage;
//write file header and image information
DWORD dwNum = 0;
bRet = ::WriteFile(hFile, &bmpFileHeader, sizeof(BITMAPFILEHEADER),
&dwNum, NULL);
bRet = bRet && ::WriteFile(hFile, &(BmpInfo.bmiHeader), sizeof(BITMAPINFOHEADER),
&dwNum, NULL);
if(bRet)
{
bRet = FALSE;
//create file mapping
HANDLE hMap = ::CreateFileMapping(hFile, NULL, PAGE_READWRITE,
0, bmpFileHeader.bfSize, NULL);
if(hMap)
{
// create bitmap object
void *pBits = NULL;
HBITMAP hBMP = ::CreateDIBSection(NULL, &BmpInfo, DIB_RGB_COLORS,
&pBits, hMap, bmpFileHeader.bfOffBits);
if(hBMP)
{
// draw the specified figure to file
CDC memTmpDC;
memTmpDC.CreateCompatibleDC(NULL);
if(memTmpDC.GetSafeHdc())
{
CBitmap *pbmp;
pbmp = CBitmap::FromHandle(hBMP);
if(pbmp)
{
memTmpDC.SelectObject(pbmp);
memTmpDC.FillRect(CRect(0,0,sz.cx,sz.cy), &CBrush(RGB(255,255,255)));
bRet = pIDrawer->Draw(&memTmpDC);
}
}
::DeleteObject(hBMP);
}
::CloseHandle(hMap);
}
}
::CloseHandle(hFile);
}
if(!bRet)
::DeleteFile(lpszFileName);
return bRet;
}

The main reason is that the scim daemo is not running.  Following is the solution:

create 75scim file under /etc/X11/Xsession.d/ with following lines :


export XMODIFIERS=”@im=SCIM”
export XIM_PROGRAM=”/usr/bin/scim -d”
export GTK_IM_MODULE=scim
export QT_IM_MODULE=scim

1. delete *.ncb, *.opt, *.plg and *.clw files from your project directory
2. rebuild your project.

And you often need CTRL+W to generate the class wizard infmation again.

But the above works quite often but not always. For a better experience, you need to try some comercial tools, for example, Visual Assistant.It is a product of Whold Tomato Software and  provides more powerful functions.

The following article from CodeProject provided a good solution.

• Changing Row Height in an owner drawn Control

And there is a similar article on CodeGuru.

• Changing row height in owner drawn control

When you try to move the item selection of a CListCtrl object, you should remember to call SetSelectionMark. If not, the program will not work as you think. It will only work once and won’t work any longer.

The reason is that even you have called SetItemState and the selection was changed in visiable, but the selection mark still keeps the old value.

The solution is to call the SetSelectionMark function after SetItemState.

Here is a short example.

void CTestListDlg::OnBtnMoveNextItem()
{
int curSel = m_list.GetSelectionMark();
int nCount = m_list.GetItemCount();
m_list.SetItemState(curSel, 0, LVIS_SELECTED);
curSel ++;
if (curSel>= nCount) curSel=0;
m_list.SetItemState(curSel, LVIS_SELECTED,LVIS_SELECTED);
m_list.SetSelectionMark(curSel);
m_list.SetFocus();
}