The CustomString sample shows how to use a custom memory allocator for CStringT to improve performance in a multithreaded application. The sample application replaces carriage return/line feed pairs in a set of text files with a single carriage return, processing multiple files simultaneously on different threads.
| Security Note |
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This sample code is provided to illustrate a concept and should not be used in applications or Web sites, as it may not illustrate the safest coding practices. |
Building and Running the Sample
To build and run this sample
Open the solution file CustomString.sln.
From the Build menu, click Build Solution.
To run the sample from a command prompt, type CustomString *.txt. The sample will find all files in the current directory with ".txt" as the file extension and will create a copy of each file with ".utxt" as the file extension. The new files will have all CR/LF pairs replaced with a single CR.
To run the sample from within Visual Studio, right-click the solution and click Properties on the shortcut menu. Under Configuration Properties. select Debugging, and set the command-line argument property to "*.txt" for the correct configuration.
Classes and Keywords
This sample uses the following classes:
IAtlStringMgr; CWin32Heap; CAtlStringMgr; CStringT
This sample uses the following keywords:
CBitmap::LoadBitmap; CEdit::Clear; CEdit::GetLineCount; CEdit::LineIndex; CEdit::LineLength; CEdit::ReplaceSel; CEdit::SetSel; CFileDialog::DoModal; CFileDialog::GetPathName; CGdiObject::DeleteObject; CSpinButtonCtrl::GetBuddy; CString::GetBufferSetLength; CString::GetLength; CString::Left; CString::LoadString; CString::ReleaseBuffer; CWinApp::LoadIcon; CWnd::GetClientRect; CWnd::GetWindowRect; CWnd::SetWindowPos; CWnd::SetWindowText; DeleteItem; CWnd::DestroyWindow; CWnd::EnableWindow; GetCursorPos; GetDlgItem; GetParent; GetWindowLong; GetWindowRect; InvalidateRect; LoadIcon; MAKELONG; MessageBeep; ReleaseCapture; ScreenToClient; SetCapture; SetWindowLong; SetWindowPos; UpdateWindow; WindowProc; mbstowcs; rand; srand; time; wsprintf