**Summary:** The base bitmap header class.

**Module:** [aspose.imaging.fileformats.wmf.objects](/imaging/python-net/aspose.imaging.fileformats.wmf.objects/)

**Full Name:** aspose.imaging.fileformats.wmf.objects.WmfBitmapBaseHeader

**Inheritance:** MetaObject

## **Properties**
| **Name** | **Type** | **Access** | **Description** |
| :- | :- | :- | :- |
| bit_count | [DibBitCount](/imaging/python-net/aspose.imaging.apsbuilder.dib/dibbitcount/) | r/w | Gets or sets a 16-bit unsigned integer that defines the format of<br/>                each pixel, and the maximum number of colors in the DIB. This value<br/>                MUST be in the [WmfBitmapBaseHeader.bit_count](/imaging/python-net/aspose.imaging.fileformats.wmf.objects/wmfbitmapbaseheader/) Enumeration (section 2.1.1.3). |
| header_size | int | r/w | Gets or sets a 32-bit unsigned integer that defines the size of this<br/>                object, in bytes. |
| planes | int | r/w | Gets or sets a 16-bit unsigned integer that defines the number of<br/>                [None](/imaging/python-net/aspose.imaging.fileformats.wmf.objects/wmfbitmapbaseheader/) for the target device. This value MUST be<br/>                0x0001. |