unit1.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 35 行

//---------------------------------------------------------------------------
#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::Button1Click(TObject *Sender)
{

Graphics::TBitmap *Bitmap = Image1->Picture->Bitmap;
Graphics::TBitmap *Bitmap2 = Image1->Picture->Bitmap;
AnsiString FileName = "C:\\temp\\test256colors.bmp";

int InfoHeaderSize, ImageSize;
//GetDIBSizes 是 BCB Graphics utilities
//取得图文件信息的内存大小与handle
GetDIBSizes(Bitmap->Handle, InfoHeaderSize, ImageSize);
//分配图文件信息需要的空间
const int size = sizeof(BITMAPINFOHEADER) + (256 * sizeof(RGBQUAD));

unsigned char* info_buffer = new unsigned char[size];
unsigned char* bits = new unsigned char[ImageSize];
try
   {
   //BITMAPINFO结构成员包含BITMAPINFOHEADER 与 RGBQUAD 2个成员