Have you thought about instead of re writing from scratch you should start to separate out the GUI and back end layer if it is not already, then you can start to write pieces of it in C#. the 250,000 lines were not written overnight they contains hundreds of thousands of man years of effort, … Read more
You can undefine it and define again: #include <iostream> #define AAA 13 int main() { #undef AAA #define AAA 7 std::cout << AAA; } outputs: 7 Please note that statements that start with # are preprocessor directives that are taken care of before the code is even compiled. In this case, this constant AAA will … Read more
Revisiting this because I have successfully replaced our top level MFC UI (the main frame, windows, and toolbars) with WPF. As it turns out, our core drawing code merely needs to be handed an HWND to render into. This made it really easy to reuse the bulk of our existing C++ codebase. Here’s a quick … Read more
There is a ton of code out there using MFC. I see these questions all the time is this still used is that still used the answer is yes. I work in a very large organization which still employs hundreds of people who write in cobol. If it has ever been used in the enterprise … Read more
Ronald Laeremans, VC++ Product Unit Manager, even said to use STL in June 2006: And frankly the team will give you the same answer. The MFC collection classes are only there for backwards compatibility. C++ has a standard for collection classes and that is the Standards C++ Library. There is no technical drawback for using … Read more
This expands on Alex Farber’s answer, which is basically correct but somewhat incomplete. When you’re first creating your application, you get to select an application type: As you can see, the default selection for the Application type is “Multiple Documents”, but just below that is “Dialog Based”. Selecting that will produce an application whose main … Read more
The C library includes strftime specifically for formatting dates/times. The format you’re asking for seems to correspond to something like this: char buffer[256]; strftime(buffer, sizeof(buffer), “%a %b %d %H:%M:%S %Y”, &your_tm); I believe std::put_time uses a similar format string, though it does relieve you of having to explicitly deal with a buffer. If you want … Read more
Here’s one way: CString str; str.Format(“%d”, 5); In your case, try _T(“%d”) or L”%d” rather than “%d”
You can’t prevent painting during resizing, but you can (with care) prevent repainting which is where flicker comes from. first, the bitblt. There a two ways to stop the bitblt thing. If you own the class of the top level window, then just register it with the CS_HREDRAW | CS_VREDRAW styles. This will cause a … Read more
Also try: BEGIN_MESSAGE_MAP(cDlgRun, CDialog) ON_NOTIFY(LVN_ITEMCHANGED, IDC_LIST2, OnItemchangedList2) END_MESSAGE_MAP() /* … */ void cDlgRun::OnItemchangedList2(NMHDR* pNMHDR, LRESULT* pResult) { NM_LISTVIEW* pNMListView = (NM_LISTVIEW*)pNMHDR; if ((pNMListView->uChanged & LVIF_STATE) && (pNMListView->uNewState & LVIS_SELECTED)) { // do stuff… } }