unit3.cpp

来自「本书《C++Builder与WindowsAPI经典范例》附含配套光盘包括132」· C++ 代码 · 共 30 行

//---------------------------------------------------------------------------
#include <vcl.h>
#pragma hdrstop

#include "Unit3.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
TForm1 *Form1;
//---------------------------------------------------------------------------
__fastcall TForm1::TForm1(TComponent* Owner)
    : TForm(Owner)
{
//隐藏Image1
Image1->Hide();
}
//---------------------------------------------------------------------------

void __fastcall TForm1::FormPaint(TObject *Sender)
{
//用Bitmap简化Image1图文件语句
Graphics::TBitmap *Bitmap = Image1->Picture->Bitmap;

//建立一新暂时设置，以利图文件16位转成8位时的最适化
BITMAPINFO bmi;
//将bmi结构所在内存初始化
memset(&bmi, 0, sizeof(BITMAPINFO));
//BITMAPINFO结构包含BITMAPINFOHEADER结构+RGBQUAD结构
//设置BITMAPINFOHEADER结构成员
bmi.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);//结构大小