急，如何获得图像的位深度（100分）(100分)

我想获得图像的位深度，用imageen只能得到bitcount而不是depth,请高手指教，谢了。

depth 是啥？

depth就是图像的位深度啊，在xp中，看图像文件的属性可以看到。不知道如何在delphi中实现。

TBitmap.PixelFormat;
type TPixelFormat = (pfDevice, pf1bit, pf4bit, pf8bit, pf15bit, pf16bit, pf24bit, pf32bit, pfCustom);

pfDevice The bitmap is stored as a device-dependent bitmap.
pf1bit The bitmap is a device-independent bitmap with one bit per pixel (black and white palette)
pf4bit The bitmap is a device-independent bitmap that uses a 16-color palette.
pf8bit The bitmap is a device-independent bitmap that uses a 256color palette.
pf15bit The bitmap is a device-independent true-color bitmap that uses 15 bits per pixel (RGB compression).
pf16bit The bitmap is a device-independent true-color bitmap that uses 16 bits per pixel (bitfield compression).

pf24bit The bitmap is a device-independent true-color bitmap that uses 24 bits per pixel.
pf32bit The bitmap is a device-independent true-color bitmap that uses 32 bits per pixel (RGB compression).
pfCustom The bitmap uses some other format. TBitmap does not support pfCustom.

我自己解决了，哈哈。送你100分吧，呜呜。

哈哈？

to apw:
您的答复很好，多谢了。但是我结束这个问题的时候您的答复还没有出现，没能给您加分，很抱歉。