how create a GDIPlus Image from HBITMAP?

[Cambalinho]

how create a GDIPlus Image from HBITMAP?

void NewImage(int Width, int Height)
    {
        if(ImageWidth==0) Dispose();
        ImageWidth=Width;
        ImageHeight=Height;
        HBitampHDC=CreateCompatibleDC(GetDC(NULL));
        memset(&bmi, 0, sizeof(bmi));
        bmi.bmiHeader.biSize = sizeof(bmi);
        bmi.bmiHeader.biWidth = Width;
        bmi.bmiHeader.biHeight = Height;
        bmi.bmiHeader.biPlanes = 1;
        bmi.bmiHeader.biBitCount = 32;
        bmi.bmiHeader.biCompression = BI_RGB;
        hBitmap = CreateBitmap(Width, Height,1,32,NULL);
        OldHBitmap=(HBITMAP)SelectObject(HBitampHDC,hBitmap);
        Gdiplus::BitmapData data;
        img->FromHBITMAP(hBitmap, NULL);
        Gdiplus::Rect rect(0,0, img->GetWidth(), img->GetHeight());
        auto status = img->LockBits(&rect, Gdiplus::ImageLockModeWrite, PixelFormat32bppARGB, &data); // 24 bit jpeg
        Pixels = static_cast<Pixel*>(data.Scan0);
        //img->UnlockBits(&data);


        RECT r={0,0,100,200};
        FillRect(HBitampHDC,&r,CreateSolidBrush(RGB(255,0,0)));

        /*for(unsigned int i=0;  i<(img->GetWidth()* img->GetHeight()-1); i++)
        {
            Pixels->blue=0;
            Pixels->green=255;
            Pixels->red=0;
            ++Pixels;
        }*/
    }

'img->FromHBITMAP(hBitmap, NULL);'
i don't know why i get errors or no results :(
the problem is the Pallet? i used 'NULL', because i don't know how i get it

[coder777]

the problem is the Pallet?

Maybe not. The problem might be line 15. Try FromHBITMAP(...) before the bitmap is selected (i.e. before line 15).