ellipsewin.cpp

来自「C++Builder程序员编程手记《配书光盘》」· C++ 代码 · 共 74 行

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

#include <vcl.h>
#pragma hdrstop

#include "EllipseWin.h"
#include "MainWin.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
Tellipsewindow *ellipsewindow;
//---------------------------------------------------------------------------
__fastcall Tellipsewindow::Tellipsewindow(TComponent* Owner)
        : TForm(Owner)
{
}
//---------------------------------------------------------------------------

void Tellipsewindow::SetEllipseWin(HWND Window)
{
  HRGN EllipseWin;

  if(!SetWindowRgn(Window,0,false))
    ShowMessage("窗体初始化失败！");
  EllipseWin=CreateEllipticRgn(0,0,Width,Height);
  if(EllipseWin==0)
    ShowMessage("创建椭圆窗口失败！");
  else
    if(!SetWindowRgn(Window,EllipseWin,true))
      ShowMessage("设置窗体失败！");
}
void __fastcall Tellipsewindow::FormShow(TObject *Sender)
{
  if(showflag)
    SetCircleWin(Handle);
  else
    SetEllipseWin(Handle);
}
//---------------------------------------------------------------------------
void __fastcall Tellipsewindow::FormResize(TObject *Sender)
{
  if(showflag)
    SetCircleWin(Handle);
  else
    SetEllipseWin(Handle);
  Invalidate();
}
//---------------------------------------------------------------------------
void __fastcall Tellipsewindow::FormClose(TObject *Sender,
      TCloseAction &Action)
{
  SetWindowRgn(Handle,0,false);        
}
//---------------------------------------------------------------------------
void __fastcall Tellipsewindow::FormClick(TObject *Sender)
{
  Close();
}
//---------------------------------------------------------------------------


void Tellipsewindow::SetCircleWin(HWND Window)
{
  HRGN EllipseWin;

  if(!SetWindowRgn(Window,0,false))
    ShowMessage("窗体初始化失败！");
  EllipseWin=CreateEllipticRgn(0,0,Height,Height);
  if(EllipseWin==0)
    ShowMessage("创建圆形窗口失败！");
  else
    if(!SetWindowRgn(Window,EllipseWin,true))
      ShowMessage("设置窗体失败！");
}