Здравствуйте alexalex, Вы писали:

A>Как таскать окно по экрану не за заголовок, а за любое место окна (формы)???

If you need for C++Builder then.
h — file

#ifndef Unit1H
#define Unit1H
//---------------------------------------------------------------------------
#include <Classes.hpp>
#include <Controls.hpp>
#include <StdCtrls.hpp>
#include <Forms.hpp>
//---------------------------------------------------------------------------
class TForm1 : public TForm
{
__published:    // IDE-managed Components
private:
    void __fastcall ONTest(TMessage&);    // User declarations
public:        // User declarations
    __fastcall TForm1(TComponent* Owner);
protected:
    BEGIN_MESSAGE_MAP
        VCL_MESSAGE_HANDLER(WM_NCHITTEST, TMessage, ONTest)
    END_MESSAGE_MAP(TForm)
};
//---------------------------------------------------------------------------
extern PACKAGE TForm1 *Form1;
//---------------------------------------------------------------------------
#endif

cpp — file

//---------------------------------------------------------------------------

#include <vcl.h>
#pragma hdrstop

#include "Unit1.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
TForm1 *Form1;
//---------------------------------------------------------------------------
__fastcall TForm1::TForm1(TComponent* Owner)
    : TForm(Owner)
{
}
//---------------------------------------------------------------------------
void __fastcall TForm1::ONTest(TMessage& msg)
{
    TForm::Dispatch(&msg);
    if(msg.Result == HTCLIENT)
        msg.Result = HTCAPTION;
}