.NET 2003 include VC7.0 , Convert VC6.0 project to VC7.0 , then rebuild all . No need other dll , no need .NET framework.

Don't use Sleep(nDelay),Sleep will block keyboard input. Use OnTimer set delay time. Use OnKeyDown get the typed keyboard key

The hMemDC must 24 bit color DC, you need a 256 color DC.

use BitBlt fuction with SRCAND or SRCPAINT

Add Member Variable with 'public',not 'protect', than you can access it.

.def is defintion file. Open a .def file ,you can define exported function in it.

If you use dialog display data , you can add List Control(not List Box) to the dialog.

change "c:\test.log" to "c:\\test.log" must have double '\'

Do draw in WM_PAINT , then the image always exist.

Pass a pointer as a parameter of static function, call the non-static function by pointer.

Use resource eidt ,set the button default.

Add control type var,use SetWindowText() to change update data.

1.The child window can't use DoModal(),you can use Create(). 2.You can show child window hide,then the parent show all.

1.rebuild all. 2.check myfunc() in file1.cpp