gdi截屏
// TTTest.cpp : 定义应用程序的入口点。
//
#include "stdafx.h"
#include "TTTest.h"
#include <stdio.h>
LPVOID screenCaptureData=NULL;
HBITMAP hBitmap;
HDC hDDC;
HDC hCDC;
int nWidth;
int nHeight;
void initGDI(){
// Get screen size
nWidth = GetSystemMetrics(SM_CXSCREEN);
nHeight = GetSystemMetrics(SM_CYSCREEN);
screenCaptureData = new char[nWidth*nHeight*4];
memset(screenCaptureData,0,nWidth);
// Get desktop DC, create a compatible dc, create a comaptible bitmap and select into compatible dc.
hDDC = GetDC( GetDesktopWindow() );
hCDC = CreateCompatibleDC(hDDC);
hBitmap =CreateCompatibleBitmap(hDDC,nWidth,nHeight);
SelectObject(hCDC,hBitmap);
}
void gdiScreenCapture(LPVOID screenCaptureData){
BitBlt(hCDC,0,0,nWidth,nHeight,hDDC,0,0,SRCCOPY);
GetBitmapBits(hBitmap,nWidth*nHeight*4,screenCaptureData);
}
int APIENTRY _tWinMain(HINSTANCE hInstance,
HINSTANCE hPrevInstance,
LPTSTR lpCmdLine,
int nCmdShow)
{
initGDI();
gdiScreenCapture(screenCaptureData);
for(int i=0 ;i<nWidth*nHeight;i++){
unsigned char b = *((char*)screenCaptureData+i*4) ;
unsigned char g = *((char*)screenCaptureData+i*4+1) ;
unsigned char r = *((char*)screenCaptureData+i*4+2) ;
unsigned char a = *((char*)screenCaptureData+i*4+3) ;
char chInput[10] ;
sprintf(chInput,"x:%d y:%d A:%d R:%d G:%d B:%d\n",i%nWidth,i/nWidth,a,r,g,b);
OutputDebugString( chInput );
}
return 0;
}
direct3d截屏
// DirectScreenCapture.cpp : 定义应用程序的入口点。
//
#include "stdafx.h"
#include "DirectScreenCapture.h"
#include <d3d9.h>
#include <WinError.h>
IDirect3D9* g_pD3DScreenCapture=NULL;
IDirect3DDevice9* g_pd3dDevice=NULL;
IDirect3DSurface9* g_pSurface=NULL;
LPVOID screenCaptureData=NULL;
RECT gScreenRect ={0,0,0,0};
HRESULT InitD3D()
{
BITMAPINFO bmpInfo;
ZeroMemory(&bmpInfo,sizeof(BITMAPINFO));
bmpInfo.bmiHeader.biSize=sizeof(BITMAPINFOHEADER);
bmpInfo.bmiHeader.biBitCount=32;
bmpInfo.bmiHeader.biCompression = BI_RGB;
bmpInfo.bmiHeader.biWidth=GetSystemMetrics(SM_CXSCREEN);
bmpInfo.bmiHeader.biHeight=GetSystemMetrics(SM_CYSCREEN);
bmpInfo.bmiHeader.biPlanes=1;
bmpInfo.bmiHeader.biSizeImage=abs(bmpInfo.bmiHeader.biHeight)*bmpInfo.bmiHeader.biWidth*bmpInfo.bmiHeader.biBitCount/8;
HDC hdc=GetDC(GetDesktopWindow());
HDC hBackDC=NULL;
HBITMAP hBackBitmap=NULL;
hBackDC=CreateCompatibleDC(hdc);
hBackBitmap=CreateDIBSection(hdc,&bmpInfo,DIB_RGB_COLORS,&screenCaptureData,NULL,0);
if(hBackBitmap==NULL)
{
return 0 ;
}
ReleaseDC(GetDesktopWindow(),hdc);
HWND hWnd = 0;
D3DDISPLAYMODE ddm;
D3DPRESENT_PARAMETERS d3dpp;
if((g_pD3DScreenCapture=Direct3DCreate9(D3D_SDK_VERSION))==NULL)
{
return E_FAIL;
}
if(FAILED(g_pD3DScreenCapture->GetAdapterDisplayMode(D3DADAPTER_DEFAULT,&ddm)))
{
return E_FAIL;
}
ZeroMemory(&d3dpp,sizeof(D3DPRESENT_PARAMETERS));
d3dpp.Windowed=true;
d3dpp.Flags=D3DPRESENTFLAG_LOCKABLE_BACKBUFFER;
d3dpp.BackBufferFormat=ddm.Format;
d3dpp.BackBufferHeight=gScreenRect.bottom =ddm.Height;
d3dpp.BackBufferWidth=gScreenRect.right =ddm.Width;
d3dpp.MultiSampleType=D3DMULTISAMPLE_NONE;
d3dpp.SwapEffect=D3DSWAPEFFECT_DISCARD;
d3dpp.hDeviceWindow=hWnd;
d3dpp.PresentationInterval=D3DPRESENT_INTERVAL_DEFAULT;
d3dpp.FullScreen_RefreshRateInHz=D3DPRESENT_RATE_DEFAULT;
if(FAILED(g_pD3DScreenCapture->CreateDevice(D3DADAPTER_DEFAULT,D3DDEVTYPE_HAL,hWnd,D3DCREATE_HARDWARE_VERTEXPROCESSING ,&d3dpp,&g_pd3dDevice)))
{
return E_FAIL;
}
if(FAILED(g_pd3dDevice->CreateOffscreenPlainSurface(ddm.Width, ddm.Height, D3DFMT_A8R8G8B8, D3DPOOL_SCRATCH, &g_pSurface, NULL)))
{
return E_FAIL;
}
return S_OK;
}
//direct实现的截图
void directScreenCapture(LPVOID screenCaptureData){
g_pd3dDevice->GetFrontBufferData(0, g_pSurface);
D3DLOCKED_RECT lockedRect;
if(FAILED(g_pSurface->LockRect(&lockedRect,&gScreenRect,D3DLOCK_NO_DIRTY_UPDATE|D3DLOCK_NOSYSLOCK|D3DLOCK_READONLY)))
{
return;
}
for(int i=0;i<gScreenRect.bottom;i++)
{
memcpy((BYTE*)screenCaptureData+(i)*gScreenRect.right*32/8,(BYTE*)lockedRect.pBits+i*lockedRect.Pitch,gScreenRect.right*32/8);
}
g_pSurface->UnlockRect();
//printf("%d\n" , l3);
}
int APIENTRY _tWinMain(HINSTANCE hInstance,
HINSTANCE hPrevInstance,
LPTSTR lpCmdLine,
int nCmdShow)
{
//初始化direct3d,用户截屏
if(FAILED(InitD3D())) return -1;
directScreenCapture(screenCaptureData);
unsigned char * screenData = (unsigned char *)screenCaptureData ;
for(int y=0 ; y<1080 ;y++){
for(int x =0 ; x<1920 ;x ++){
int offset = (x + y * 1080) *4;
unsigned char b = *(screenData + offset);
unsigned char g = *(screenData + offset + 1);
unsigned char r = *(screenData + offset + 2);
unsigned char a = *(screenData + offset + 3);
}
}
return 0;
}