//这个函数的特点是可以指定输入数据的长度，注意，input的有效数据长度必须是16的整数倍，input的大小必须大于等于len。
//但是outbuf仅仅存储，有效的输出长度。
int Aes::DecryptEcb(Memory<char>& outbuf,const void* input,int len){
if(len<=0) return 0;
if(outbuf.Length()<(uint)len){
if(!outbuf.SetLength(len)) return 0;
}
return DecryptEcb(outbuf.Handle(),len,input,len);
}
uint Image::GetPropertyItem(Memory<ImageItem>& tms){
if(!_image) return 0;
int nSize = ((_Image*)_image)->GetPropertyItemSize(PropertyTagFrameDelay);
tms.SetLength(nSize);
((_Image*)_image)->GetPropertyItem(PropertyTagFrameDelay, nSize, (Gdiplus::PropertyItem*)tms.Handle());
return nSize;
}
uint Image::FrameCount(){
if(!_image) return 0;
UINT count = ((_Image*)_image)->GetFrameDimensionsCount();
Memory<GUID> ids;
ids.SetLength(count);
((_Image*)_image)->GetFrameDimensionsList(ids, count);
return ((_Image*)_image)->GetFrameCount(ids);
}
int Base64::Encode(Memory<char>& output,const void* data,int len){
int dlen = 0;
base64_encode(0,&dlen,(uchar*)data,len);
if(dlen==0) return 0;
if(!output.SetLength(dlen)) return 0;
base64_encode((byte*)output.Handle(),&dlen,(uchar*)data,len);
return dlen;
}
int Base64::Decode(Memory<char>& output,const char* data,int len){
if(len==-1) len = strlen(data);
int dlen = 0;
base64_decode(0,&dlen,(uchar*)data,len);
if(dlen==0) return 0;
if(!output.SetLength(dlen)) return 0;
base64_decode((byte*)output.Handle(),&dlen,(uchar*)data,len);
return dlen;
}
//返回值是加密数据的长度，outbuf会自动设置大小，但是不一定是数据长度，可能大于它。
int Aes::EncryptEcb(Memory<char>& outbuf,const void* input,int len){
if(len<=0) return 0;
int lastn = len&0xF;
int outLen;
if(lastn) outLen = len - lastn + 16;
else outLen = len;
if(outbuf.Length()<(uint)outLen){
if(!outbuf.SetLength(outLen)) return 0;
}
return EncryptEcb(outbuf.Handle(),outLen,input,len);
}
UINT_PTR FileDialog::OFNHookProc(HWND hDlg,UINT uMsg,WPARAM wParam,LPARAM lParam)
{
if(_Handle==0) _Handle = ::GetParent(hDlg);
if(uMsg==WM_NOTIFY)
{
LPOFNOTIFY pon = (LPOFNOTIFY)lParam;
switch(pon->hdr.code)
{
case CDN_SELCHANGE:
{
/*if(OnSelChange.IsNull()) break;
Memory<wchar_t> path(MAX_PATH),file(MAX_PATH);
int n = (int)::SendMessage(_Handle,CDM_GETFILEPATH,(WPARAM)MAX_PATH,(LPARAM)path.Handle());
这个消息返回的值包括目录和文件名，目录们没有引号，文件名用空格分隔并且用引号包围，目录和文件名之间没有空格，目录末尾包含反斜杠。
但是引号有时没有，有时有，如果文件名包含空格，实际上无法正确获取文件名，所以此方法实际上不可用。
if(n<0) path[0] = 0;
n = (int)::SendMessage(_Handle,CDM_GETSPEC,(WPARAM)MAX_PATH,(LPARAM)file.Handle());
这个消息返回文件名，规则同上。
if(n<0) path[0] = 0;
OnSelChange(path,file);*/
break;
}
case CDN_FOLDERCHANGE:
{
if(!OnFolderChange.IsNull()){
Memory<wchar_t> path;
path.SetLength(MAX_PATH);
int n = (int)::SendMessage(_Handle,CDM_GETFOLDERPATH,(WPARAM)MAX_PATH,(LPARAM)path.Handle());
if(n<0){
path[0] = 0;
}
OnFolderChange(path,this);
}
break;
}
case CDN_FILEOK://this message is ago okid message,if return TRUE then no okid message;
if((!OnFileOk.IsNull())&&(OnFileOk(pon->lpOFN,this)))
{
SetWindowLong(_Handle,DWL_MSGRESULT,1L);
return 1;
}
break;
case CDN_TYPECHANGE:
if(!OnTypeChange.IsNull()) OnTypeChange(pon->lpOFN->nFilterIndex,this);
break;
}
}
return 0;
};
int Image::Save(Memory<char>& mem,LPCWSTR type,long quality){
if(_image==0) return 0;
CLSID clsid;
//未知原因，如果不用一个变量转换一下，type是一个常量字串的话，如果把 type 直接传给 GetImageEncoderClsid 会引起程序崩溃。
//wchar_t tp[256];
//这样也不行。
//cs::WcsCopy(tp,type);
cs::String tp = type;
if(!GetImageEncoderClsid(tp,&clsid)) return 0;
if(quality>100) quality = 100;
if(quality<0) quality = 0;
Gdiplus::EncoderParameters eps;
eps.Count = 1;
eps.Parameter[0].Guid = Gdiplus::EncoderQuality;
eps.Parameter[0].NumberOfValues = 1;
eps.Parameter[0].Type = Gdiplus::EncoderParameterValueTypeLong;
eps.Parameter[0].Value = &quality;
IStream* stream;
if(FAILED(CreateStreamOnHGlobal(0,1,&stream))) return 0;
if(((_Image*)_image)->Save(stream,&clsid,&eps)!=0) return 0;
ULONG ws = 0;
LARGE_INTEGER li;
ULARGE_INTEGER npos;
li.QuadPart = 0;
stream->Seek(li,STREAM_SEEK_END,&npos);
if(mem.Length()<npos.LowPart){
mem.SetUseSysMemory(1);
if(!mem.SetLength(npos.LowPart)) return 0;
}
stream->Seek(li,STREAM_SEEK_SET,0);
HRESULT ret = stream->Read(mem.Handle(),mem.Length(),&ws);
stream->Release();
if(FAILED(ret)) return 0;
return ws;
}
int HttpRequest::Request(const void* data,int len,Memory<char>& html,String* retHead){
if(!hRequest) return -1;
if(!::HttpSendRequest(hRequest,NULL,0,(LPVOID)data,len)) return -1;
DWORD dwSize = 0;
if(retHead){
HttpQueryInfo(hRequest,HTTP_QUERY_RAW_HEADERS_CRLF, NULL, &dwSize, NULL);
if(dwSize!=0){
retHead->SetCubage(dwSize/2);
if(HttpQueryInfo(hRequest, HTTP_QUERY_RAW_HEADERS_CRLF, (LPVOID)retHead->Handle(), &dwSize, NULL)){
//安全起见，实际上数据已经是一个NULL结尾的字串。
(*retHead)[dwSize/2-1] = 0;
retHead->Realize();
}
}
}
int offset = 0;
for(;;){
char szData[1024];
DWORD dwByteRead = 0;
::InternetReadFile(hRequest,szData,sizeof(szData),&dwByteRead);
if(!dwByteRead) break;
if(html.Length()<dwByteRead+offset+1){
if(!html.SetLength(dwByteRead+offset+1)){
Print(L"html alloc failed");
break;
}
}
html.CopyFrom(szData,dwByteRead,offset);
offset += dwByteRead;
}
if(offset!=0) html[offset] = 0;
::InternetCloseHandle(hConnect);
hConnect = 0;
::InternetCloseHandle(hRequest);
hRequest = 0;
return offset;
}
//class ImgEncode
bool GetImageEncoderClsid(const wchar_t* type,CLSID* pClsid){
static Memory<char> buffer;
static UINT number = 0;
Gdiplus::ImageCodecInfo* imageCodecInfo = (Gdiplus::ImageCodecInfo*)buffer.Handle();
if(imageCodecInfo==0){
UINT size = 0;
Gdiplus::GetImageEncodersSize(&number,&size);
if(!size) return 0;
buffer.SetLength(size);
imageCodecInfo = (Gdiplus::ImageCodecInfo*)buffer.Handle();
Gdiplus::GetImageEncoders(number,size,imageCodecInfo);
}
Registry reg;
if(!reg.Create(type,HKEY_CLASSES_ROOT)) return 0;
String str(16);
if(!reg.GetStrValue(L"Content Type",str)) return 0;
for(UINT i=0;i<number;i++){
if(WcsEqual(str,imageCodecInfo[i].MimeType)){
*pClsid = imageCodecInfo[i].Clsid;
return 1;
}
}
return 0;
}