mainform.cpp

来自「C++ BUILDER精彩编程实例集锦(源码) 第一部分 界面设计 第二部分」· C++ 代码 · 共 44 行

//主窗体类实现文件
//---------------------------------------------------------------------------

#include <vcl.h>
#pragma hdrstop

#include "Mainform.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
TForm1 *Form1;
//---------------------------------------------------------------------------
__fastcall TForm1::TForm1(TComponent* Owner)
        : TForm(Owner)
{
  bChange=false;
}
//---------------------------------------------------------------------------
void __fastcall TForm1::ChangePicture(TMessage Message)
{//消息响应函数
   if(Message.WParam==WM_MYCUSTOMMESSAGE)
   {
     if(!bChange )
     {
      this->Image1->Picture->LoadFromFile("luobin02.bmp");
      bChange=!bChange;
     }
     else
     {
       this->Image1->Picture->LoadFromFile("luobin01.bmp");
       bChange=!bChange;
     }
   }
   TForm::Dispatch(&Message);
}
//---------------------------------------------------------------------------
void __fastcall TForm1::OnCreate(TObject *Sender)
{
  HMENU hMenu=GetSystemMenu(Handle,false);
  AppendMenu(hMenu,MF_STRING,WM_MYCUSTOMMESSAGE,"通过系统菜单切换图片");
}
//---------------------------------------------------------------------------