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The MFC CTime class uses the time_t “structure” internally to store its data. This means that it stores time/date as a signed 32-bit count of milliseconds since January 1, 1970. While this makes it safe for the dreaded year 2000, this counter will wrap sometime in early 2038. As a result, CTime stops functioning for […]

Introduction Like most people who contribute, I think it’s a part of wanting to contribute something back into the system. However, I’ve always felt that perhaps I’m not worthy being a mere social programmer rather than by profession. Anyhow, a caveat, I’m self taught and I don’t profess to be an expert, however I do […]

Environment: MSVC++ 5.00, win95 Many have had a problem with propertysheets embedded in dialog-boxes. The problem is that the system hangs after the sheet loses the focus and the window is activated. Below is some sourcecode for propertysheets and pages: (this is a part of a big project with dialogeditor, reporteditor) everything is created on […]

This article was contributed by James R. Skinner This code allows a window to remember its last position and status. It takes into account the possibility of multiple monitors being attached to the system as avaliable in Windows 98 and Windows 2000. This code is based on code by Yonat Sharon. His code worked fine […]

Environment: ****** –> There are some methods to connect to a running instance of IE. This one is how to connect through the ROT (Running Object Table). Usually, an application connects to a running instance of another application using the Running Object table. However the Internet Explorer 4.0 doesn’t not register itself in ROT. The […]

Environment: ******–> Overwiew: This code implements a drag & drop operation within an explorer style project (splitter window with left hand treeView right hand listView). How it works: Both views have their own implmentation to handle drag & drop within the view. By NOT setting “SetCapture/ReleaseCapture”, the drag item can be moved outside the originator […]

I add here the code that could be used to switch views in splitter panes. I usually make database applications, and I don’t want that the document to be created/destroyed by the framework, so I create the document myself, and in document’s constructor I set the m_bAutoDelete flag to FALSE. The CMainFrame class contains CSplitterWnd […]

MFC has some nice Control container support embedded seamlessly into the CWnd class. ActiveX controls can be created via CreateControl just as if they were normal Windows controls. Besides, CWnd, the relevant classes are COleControlContainer, COleControlSite and COccManager (declared in mfcsrcoccimpl.h) I wanted to modify this container support so that controls supporting windowless activation are […]

–> The VC++ dialog editor allows you to have "any", "lower", and "upper" case characters typed into a CEditCtrl. A user of one of my apps commented that the displaying of some CEditCtrl data looked untidy, they were either lower or upper case, or even a mixture of the two cases. What was required was […]

–> When using VC++ to create a DLL to be called from a Visual Basic program, there is a problem with passing data back and forth between the VB executable and the VC++ DLL. Specifically, when passing an array of User-Defined Type (UDT) from VB to VC++, if a data element of the UDT is […]

–> When you generate a formview based application or generally when you are using formview derived class, you will find this piece of code. CTempView::CTempView() : CFormView(CTempView::IDD) { //{{AFX_DATA_INIT(CTempView) //}}AFX_DATA_INIT } Now depending upon the resolution you want to load the resource i.e. for 1024×768 you want to load CTempView::IDD and for 800×600 you want […]

–> There is a simple way how to go round the dialog which appears when your app uses more than one document template and you click the ‘new’ button. You can open any document directly. Here is a small example of function which opens all documents from your document template at once. void CMyApp::OnOpenAllTypesOfDocuments() { […]