C++ - JPG 파일 불러오기

void __fastcall TDataModule_Vision::OriginalLoadBMPFile_JPG(AnsiString filePath,
TImage *img, double r, double g, double b)
{
    TJPEGImage *tempJpg = new TJPEGImage();
TImage *tempImg = new TImage(Owner);
TRect ARect;

tempJpg->LoadFromFile(filePath);

    tempImg->Width = 2560;
tempImg->Height = 1920;
ARect = Rect(0, 0, tempImg->Width, tempImg->Height);

tempImg->Canvas->StretchDraw(ARect, tempJpg);
tempJpg->Assign(tempImg->Picture->Bitmap);

SetStretchBltMode(img->Canvas->Handle, HALFTONE);
StretchBlt(img->Canvas->Handle, 0, 0, img->Width, img->Height,
tempImg->Canvas->Handle, 0, 0, tempImg->Width, tempImg->Height, SRCCOPY);

while(filePath.Pos("\\")) filePath.Delete(1, filePath.Pos("\\"));
m_filePath = filePath;

SetGrayColorInfo(tempImg, r, g, b);

delete tempImg;
}