* 方法一  
cImg = Getpict()   && 获取 bmp, jpg, gif  
  
xImgObj = LoadPicture(cImg)  
With xImgObj  
    lnWidth = Int(.Width/26.458)  
    lnHeight = Int(.Height/26.458)  
Endwith  
  
Messagebox("宽度 = " + Transform(lnWidth) + "(像数)" + Chr(13) + ;  
    "高度 = " + Transform(lnHeight) + "(像数)")  
  
* 方法二   
  
cc = Sys(2015)  
_Screen.NewObject(cc, 'Image')  
With GetPem(_Screen, cc) as Image  
    .Picture = GetPict()  
    ? '图片宽度', .Width  
    ? '图片高度', .Height  
EndWith  
_Screen.RemoveObject(cc)

方法三

op = CREATEOBJECT("Image")
op.Picture = GETPICT()
? "Width  : ", op.Width
? "Height : ", op.Height
  

来源 http://bbs.csdn.net/topics/390972202