Displaying the value of the WIN API variable

Hello, maybe the problem is that you set the number of characters to 100, and not to strlen(text)

 int i=5; char text[50]={'\0'};//можно ещё обнулить, для уверенности itoa(i,text,10);//переводим число в строку TextOutA(hdc,10,10,text,strlen(text)); 

I recall that in WM_PAINT HDC we get the function BeginPaint(HWND,LPPAINTSTRUCT) , release EndPaint(HWND,LPPAINTSTRUCT) . In all other cases - GetDC(HWND) \ GetWindowDC(HWND) , release ReleaseDC(HWND,HDC)

We need brackets ( BeginPath and EndPath ) and, perhaps, we need to set the color ( SetTextColor and SetBkMode ) in order not to write black on black.

 BeginPath(hdc); // SetTextColor(hdc, ...); // SetBkMode(hdc, ...); TextOut(hdc, 700, 50, text,100); EndPath(hdc);