2.3.4.3 程序文件main.cpp
#include <vcl.h>
#pragma hdrstop
#include "main.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
TForm1 *Form1;
//---------------------------------------------------------------------------
__fastcall TForm1::TForm1(TComponent* Owner)
: TForm(Owner)
{
}
//---------------------------------------------------------------------------
void __fastcall TForm1::Button1Click(TObject *Sender)
{
if(!FAILED(DirectDrawCreate(NULL,&lpDD,NULL)))
{
if(!FAILED(lpDD->QueryInterface(IID_IDirectDraw2,(LPVOID *)&lpDD2)))
{
lpDD->Release();
if(!FAILED(lpDD2->SetCooperativeLevel(Handle,
DDSCL_EXCLUSIVE|DDSCL_FULLSCREEN|DDSCL_NOWINDOWCHANGES)))
{
if(!FAILED(lpDD2->SetDisplayMode(800,600,16,0,0)))
{
Memo1->Lines->Text=Memo1->Lines->Text+"Create DirectDraw Object OK."+(String)CR;
Button1->Enabled=false;
Button2->Enabled=true;
return;
}
}
}
}
Memo1->Lines->Text=Memo1->Lines->Text+"Create DirectDraw Object Failed."+(String)CR;
}
//---------------------------------------------------------------------------
void __fastcall TForm1::Button2Click(TObject *Sender)
{
ZeroMemory(&ddsd,sizeof(ddsd));
ddsd.dwSize=sizeof(ddsd);
ddsd.dwFlags=DDSD_CAPS;
ddsd.ddsCaps.dwCaps=DDSCAPS_PRIMARYSURFACE;
if(FAILED(lpDD2->CreateSurface(&ddsd,&lpDDPrimary,NULL)))
Memo1->Lines->Text=Memo1->Lines->Text+"Create Priamry Surface Failed."+(String)CR;
else
{
Memo1->Lines->Text=Memo1->Lines->Text+"Create Priamry Surface OK."+(String)CR;
Button2->Enabled=false;
Button3->Enabled=true;
}
}
//---------------------------------------------------------------------------
void __fastcall TForm1::FormClose(TObject *Sender, TCloseAction &Action)
{
lpDD2->Release();
}
//---------------------------------------------------------------------------
void __fastcall TForm1::Button3Click(TObject *Sender)
{
ZeroMemory(&ddsd,sizeof(ddsd));
ddsd.dwSize=sizeof(ddsd);
ddsd.dwFlags=DDSD_CAPS|DDSD_HEIGHT|DDSD_WIDTH;
ddsd.dwHeight=100;
ddsd.dwWidth=100;
ddsd.ddsCaps.dwCaps=DDSCAPS_OFFSCREENPLAIN;
if(FAILED(lpDD2->CreateSurface(&ddsd,&lpDDOffScreen,NULL)))
Memo1->Lines->Text=Memo1->Lines->Text+"Create OffScreen Surface Failed."+(String)CR;
else
{
Memo1->Lines->Text=Memo1->Lines->Text+"Create OffScreen Surface OK."+(String)CR;
Button3->Enabled=false;
Button4->Enabled=true;
}
}
//---------------------------------------------------------------------------
void __fastcall TForm1::Button4Click(TObject *Sender)
{
HDC hdc,hdcImage;
HBITMAP hbm;
hbm=(HBITMAP)LoadImage(NULL,"view.bmp",IMAGE_BITMAP,100,100,LR_LOADFROMFILE|LR_CREATEDIBSECTION);
hdcImage=CreateCompatibleDC(NULL);
SelectObject(hdcImage,hbm);
if(FAILED(lpDDOffScreen->GetDC(&hdc)))
Memo1->Lines->Text=Memo1->Lines->Text+"Get DC of OffScreen Screen Surface Failed."+(String)CR;
else
{
Memo1->Lines->Text=Memo1->Lines->Text+"Get DC of OffScreen Screen Surface OK."+(String)CR;
if(BitBlt(hdc,0,0,100,100,hdcImage,0,0,SRCCOPY)==FALSE)
Memo1->Lines->Text=Memo1->Lines->Text+"OffScreen Screen BitBlt Failed."+(String)CR;
else
{
Memo1->Lines->Text=Memo1->Lines->Text+"OffScreen Screen BitBlt OK."+(String)CR;
Button4->Enabled=false;
Button5->Enabled=true;
}
lpDDOffScreen->ReleaseDC(hdc);
}
if(hdcImage) DeleteDC(hdcImage);
if(hbm) DeleteObject(hbm);
}
//---------------------------------------------------------------------------
void __fastcall TForm1::Button5Click(TObject *Sender)
{
HDC hdc,hdcImage;
HBITMAP hbm;
hbm=(HBITMAP)LoadImage(NULL,"view.bmp",IMAGE_BITMAP,200,100,LR_LOADFROMFILE|LR_CREATEDIBSECTION);
hdcImage=CreateCompatibleDC(NULL);
SelectObject(hdcImage,hbm);
if(FAILED(lpDDPrimary->GetDC(&hdc)))
Memo1->Lines->Text=Memo1->Lines->Text+"Get DC of Primary Screen Surface Failed."+(String)CR;
else
{
Memo1->Lines->Text=Memo1->Lines->Text+"Get DC of Primary Screen Surface OK."+(String)CR;
if(BitBlt(hdc,0,0,200,100,hdcImage,0,0,SRCCOPY)==FALSE)
Memo1->Lines->Text=
Memo1->Lines->Text+"Primary Screen BitBlt Failed."+(String)CR;
else
{
Memo1->Lines->Text=Memo1->Lines->Text+"Primary Screen BitBlt OK."+(String)CR;
Button5->Enabled=false;
Button6->Enabled=true;
}
lpDDPrimary->ReleaseDC(hdc);
}
if(hdcImage) DeleteDC(hdcImage);
if(hbm) DeleteObject(hbm);
}
//---------------------------------------------------------------------------
void __fastcall TForm1::Button6Click(TObject *Sender)
{
HDC hdcPrimary,hdcOffScreen;
lpDDPrimary->GetDC(&hdcPrimary);
lpDDOffScreen->GetDC(&hdcOffScreen);
BitBlt(hdcPrimary,200,0,100,100,hdcOffScreen,0,0,SRCCOPY);
lpDDPrimary->ReleaseDC(hdcPrimary);
lpDDOffScreen->ReleaseDC(hdcOffScreen);
Memo1->Lines->Text=Memo1->Lines->Text+"OffScreen To Primary OK."+(String)CR;
Button6->Enabled=false;
Button7->Enabled=true;
}
//---------------------------------------------------------------------------
void __fastcall TForm1::Button7Click(TObject *Sender)
{
lpDD2->SetDisplayMode(640,480,16,0,0);
if(lpDDPrimary->IsLost()==DDERR_SURFACELOST&&lpDDOffScreen->IsLost()==DDERR_SURFACELOST)
Memo1->Lines->Text=Memo1->Lines->Text+"Surfaces are Lost."+(String)CR;
else
Memo1->Lines->Text=Memo1->Lines->Text+"Surfaces remain."+(String)CR;
Button7->Enabled=false;
Button8->Enabled=true;
}
//---------------------------------------------------------------------------
void __fastcall TForm1::Button8Click(TObject *Sender)
{
lpDD2->SetDisplayMode(800,600,16,0,0);
lpDDPrimary->Restore();
lpDDOffScreen->Restore();
Memo1->Lines->Text=Memo1->Lines->Text+"Restore lost Surfaces OK."+(String)CR;
Button8->Enabled=false;
Button9->Enabled=true;
}
//---------------------------------------------------------------------------
void __fastcall TForm1::Button9Click(TObject *Sender)
{
Button4Click(Sender);
Button5Click(Sender);
Button6Click(Sender);
}