求助！ C++的D2D编程问题。。

@忘了5555
求吧主大人现身。。

test.cpp
#include<windows.h>
#include<WinDef.h>
#include<d2d1.h>
#include<tchar.h>
#include"decode.h"
#include<iostream>
#include<DXGIFormat.h>
using namespace std;
#pragma comment (lib,"d2d1")
struct hwnd{int p;public:hwnd(int s){p=s;}};
struct Rect{long left;long top;long right;long bottom;public:Rect(long l,long t,long r,long b){left=l;top=t;right=r;bottom=b;}};
int main(){HWND a = FindWindow(_T("Notepad"),NULL);//(HWND)malloc(sizeof HWND); if(a==NULL){cout<<"failed"<<endl;}
HWND deskTop = GetDesktopWindow();//cout<<deskTop->unused<<endl;//struct hwnd *ptrhWnd= (hwnd *)a;
cout<<"窗口句柄暂定为笔记本 人工输入方式出现bug"<<endl;
//cin>>a->unused;
int s = 0; //暂停程序用的
cout<<"HWND:"<<a->unused<<endl;
//程序开头
//Initalize ID2I1HwndRenderTarget myHwndRenderTarget
//Initalize Rectangle of HWND a
Rect c(0,0,0,0);
LPRECT myRect;
myRect = (LPRECT)&c;
//myRect->bottom=myRect->left=myRect->right=myRect->top = 0;
if(GetWindowRect(a,myRect)==0)//desktop testonly 测试结束请修改为变量a
{cout<<"getwindowrect has failed"<<endl;}
cout<<c.left<<c.top<<c.right<<c.bottom<<endl;
Rect *myRectTrans;myRectTrans = (Rect *)myRect;
//
//Initialize D2D1Factory
//d2d全部依赖于ID2D1Factory 这是一个重要的接口
ID2D1Factory *myFactory;
HRESULT hResult = D2D1CreateFactory(D2D1_FACTORY_TYPE_MULTI_THREADED,&myFactory);if(hResult!=0)
{cout<<"here is some error:"<<hResult<<endl;cin>>s;return 0;}
decode::dosomthing(a,(decode::Rect*)myRectTrans,myFactory);

我还是截图算了 复制粘贴过来没有换行符。。。

decode.h


HRESULT rendertargetcheckflag = myFactory->CreateHwndRenderTarget
(D2D1::RenderTargetProperties(),D2D1::HwndRenderTargetProperties(Hwnd,D2D1::SizeU(
myRectTrans->right-myRectTrans->left,
myRectTrans->bottom-myRectTrans->top)),
&myHwndRenderTarget);
if(FAILED(rendertargetcheckflag))
{
cout<<"create HWNDRenderTarget failed:"<<rendertargetcheckflag<<endl;
int l;
cin>>l;
exit(1);
}