CDC DeleteDC is a function from the Microsoft Foundation Class (MFC) library, which is a part of the Microsoft Visual C++ package. It allows deleting the device context of a particular device, which is no longer needed in the program.
Code Example 1:
CDC* pDC = GetDC(); // do something with pDC ReleaseDC(pDC); // pDC is now invalid
In this code example, GetDC() function is used to retrieve the device context from the operating system. When the device context is no longer needed, ReleaseDC() function is called to release it. The device context pointer pDC is now invalid and should not be used anymore.
Code Example 2:
CDC* pDC = new CDC(); // do something with pDC delete pDC;
This code example demonstrates how to create a new device context object dynamically using the new operator. Once the device context is no longer needed, it can be deleted using the delete operator. This will free up the memory and release the device context resources. Again, pDC pointer is now invalid and should not be used anymore.
In conclusion, CDC DeleteDC is a crucial function in managing device contexts in Windows-based applications using C++ programming language. It's a part of the MFC library, which is a popular C++ package for building Windows-based user interfaces.
C++ (Cpp) CDC::DeleteDC - 30 examples found. These are the top rated real world C++ (Cpp) examples of CDC::DeleteDC extracted from open source projects. You can rate examples to help us improve the quality of examples.