Why doesn't my form receive WM_DropFiles when files are dropped on it?

Question

I am using Embarcadero RAD Studio XE to develop an application. I am trying catch the file(s) drag and drop to the application with the following code

TMainF         


        

Answer 1

in TForm.Create use two lines

ChangeWindowMessageFilter (WM_DROPFILES, MSGFLT_ADD);

ChangeWindowMessageFilter (WM_COPYGLOBALDATA, MSGFLT_ADD);

that's all