Excel VBA Userform - 设置与userform图像大小相同的图表

I have an image in a userform which displays a pre-existing chart, according the properties menu the height = 246 and width = 462 (it does not specify units). I want my chart to be sized so that when a .GIF of the chart is saved and loaded to the userform image is matches the dimensions. In the chart properties I can change the dimensions but only has the option for inches. How can I get these dimensions to match?I have an image in a userform which displays a