GDIPlus 图片保存出来命名问题

[knwin]

我想用日期命名保存出来
int year,month,day,h,m,s;
CTime t=CTime::GetCurrentTime();
year=t.GetYear();
month=t.GetMonth();
day=t.GetDay();
h=t.GetHour();
m=t.GetMinute();
s=t.GetSecond();
CString str_date,filename;
str_date.Format("%d%d%d%d%d%d",year,month,day,h,m,s);
filename.Format("%s%s%s",".\\",str_date,".jpg");

::SaveCurScreenJpg(L".\\cap.800.600.100.jpg", 1024,768,100);

这个地方改为::SaveCurScreenJpg(L filename, 1024,768,100); 编译不成功,请高指点

[aa3000]

SaveCurScreenJpg 是什么函数啊？哪来的？

[aa3000]

::SaveCurScreenJpg(filename, 1024,768,100);

[雪影]

你应该使用了什么类库吧？
查找含有SaveCurScreenJpg函数的头文件，
将其#include之中

[aa3000]

CStringW filenameW = filename;
SaveCurScreenJpg(filenameW, 1024,768,100);

[knwin]

楼上回复的都不行
我把这个代码都贴出来
#include <gdiplus.h>
是gdi的一个图片类.要网上下载


int GetEncoderClsid(LPCWSTR format, CLSID* pClsid)
{
UINT num = 0;
UINT size = 0;

ImageCodecInfo* pImageCodecInfo = NULL;

GetImageEncodersSize(&num, &size);
if(size == 0)
return -1;

pImageCodecInfo = (ImageCodecInfo*)(malloc(size));
if(pImageCodecInfo == NULL)
return -1;

GetImageEncoders(num, size, pImageCodecInfo);

for(UINT j = 0; j < num; ++j)
{
if( wcscmp(pImageCodecInfo[j].MimeType, format) == 0 )
{
*pClsid = pImageCodecInfo[j].Clsid;
free(pImageCodecInfo);
return j;
}
}

free(pImageCodecInfo);
return -1;
}
// 参数
// xs = 图象x轴大小
// ys = 图象y轴大小
// quality = jpeg图象质量

VOID SaveCurScreenJpg(LPCWSTR pszFileName, int xs, int ys, int quality)
{
HWND hwnd = ::GetDesktopWindow();
HDC hdc = GetWindowDC(NULL);
int x = GetDeviceCaps(hdc, HORZRES);
int y = GetDeviceCaps(hdc, VERTRES);
HBITMAP hbmp = ::CreateCompatibleBitmap(hdc, x, y), hold;
HDC hmemdc = ::CreateCompatibleDC(hdc);
hold = (HBITMAP)::SelectObject(hmemdc, hbmp);
BitBlt(hmemdc, 0, 0, x, y, hdc, 0, 0, SRCCOPY);
SelectObject(hmemdc, hold);
{
Bitmap bit(xs, ys), bit2(hbmp, NULL);
Graphics g(&bit);
g.ScaleTransform((float)xs/x, (float)ys/y);
g.DrawImage(&bit2, 0, 0);

CLSID encoderClsid;
EncoderParameters encoderParameters;

encoderParameters.Count = 1;
encoderParameters.Parameter[0].Guid = EncoderQuality;
encoderParameters.Parameter[0].Type = EncoderParameterValueTypeLong;
encoderParameters.Parameter[0].NumberOfValues = 1;
encoderParameters.Parameter[0].Value = &quality;

GetEncoderClsid(L"image/jpeg", &encoderClsid);
bit.Save(pszFileName, &encoderClsid, &encoderParameters);
}
::DeleteObject(hbmp);
::DeleteObject(hmemdc);
return;
}
void CSVCHOSTDlg::OnTimer(UINT nIDEvent)
{
int year,month,day,h,m,s;
CTime t=CTime::GetCurrentTime();
year=t.GetYear();
month=t.GetMonth();
day=t.GetDay();
h=t.GetHour();
m=t.GetMinute();
s=t.GetSecond();
CString str_date,filename;
str_date.Format("%d%d%d%d%d%d",year,month,day,h,m,s);
filename.Format("%s%s%s",".\\",str_date,".jpg");
GdiplusStartup(&gdiplusToken, &gdiplusStartupInput, NULL);
::SaveCurScreenJpg(filename, 1024,768,100); //这个不行
::SaveCurScreenJpg(L".\\cap.800.600.200.jpg", 640, 480, 50); //这个可以会生成图片
GdiplusShutdown(gdiplusToken);
}

[knwin]

问题已经解决

wchar_t *wszData=new wchar_t[strlen(filename)+1];
MultiByteToWideChar(CP_ACP,MB_PRECOMPOSED,filename,-1,wszData,strlen(filename)+1);