Vs2019 use wizard to generate an MFC Application

Create project

choice mfc Templates

Configuration items

function

Class view

Double click the class name to jump to the class declaration .h file

The following is the member function in the class , Double click to jump to the corresponding definition section

Addition of message processing

stay CMainFrame Add message processing , The program didn't respond , Need to be in view Layer operates the above process .
Find... In the message list WM_LBUTTONDOWN news , add to .
Add several changes to the engineering documents .
First of all ： Add the function declaration of the left mouse button message function in the framework class header file
The second place ： In the framework class cpp The message mapping macro... Is added to the file

The third place ： In the frame column cpp The function definition for processing the left mouse button message is added to the file

void CMFCTestView::OnLButtonDown(UINT nFlags, CPoint point)
{
    
	// TODO:  Add message handler code and / Or call the default value 

	CView::OnLButtonDown(nFlags, point);
	CString str;
	str.Format(TEXT("x=%d , y=%d "), point.x, point.y);
	MessageBox(str);
}