---
title: "Bitmap Properties "
canonical: https://www.graphicsmill.com/docs/gm5/Properties_T_Aurigma_GraphicsMill_Bitmap.htm
product: "Graphics Mill 5.5 for .NET"
---
This documentation is for the old version. [Go to the latest Graphics Mill docs](https://www.graphicsmill.com/docs/gm/)
# Bitmap Properties
The [Bitmap](https://www.graphicsmill.com/docs/gm5/T_Aurigma_GraphicsMill_Bitmap.htm.md) type exposes the following members.
## Properties
| | Name | Description |
| --- | --- | --- |
|  | [BitsLocked](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_Bitmap_BitsLocked.htm.md) | Indicates if pixels are locked with [LockBits(Int32, Int32, Int32, Int32)](https://www.graphicsmill.com/docs/gm5/M_Aurigma_GraphicsMill_Bitmap_LockBits_4_951ae041.htm.md). |
|  | [BitsPerPixel](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_Bitmap_BitsPerPixel.htm.md) | Returns number of bits per pixel. |
|  | [CanRedo](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_Bitmap_CanRedo.htm.md) | Indicates if last reverted action can be redone. |
|  | [CanUndo](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_Bitmap_CanUndo.htm.md) | Indicates if last bitmap modification can be undone. |
|  | [Channels](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_Bitmap_Channels.htm.md) | Returns object which provides access to various operations with bitmap channels. |
|  | [ColorAdjustment](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_Bitmap_ColorAdjustment.htm.md) | Returns object providing methods which are responsible for color adjustment and tone correction (brightness/contrast, levels, hue/saturation/lightness adjustment, etc.). |
|  | [ColorManagement](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_Bitmap_ColorManagement.htm.md) | Returns object providing methods which are responsible for color management. |
|  | [ColorProfile](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_Bitmap_ColorProfile.htm.md) | Gets/sets color profile associated with the bitmap. |
|  | [ColorSpace](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_Bitmap_ColorSpace.htm.md) | Indicates color space of the current bitmap. |
|  | [CompressSerializedData](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_Bitmap_CompressSerializedData.htm.md) | Gets/sets a value that specifies whether to compress data during serialization. |
|  | [Handle](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_Bitmap_Handle.htm.md) | Gets a GDI handle to the bitmap (HBITMAP). |
|  | [HasAlpha](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_Bitmap_HasAlpha.htm.md) | Specifies whether current pixel format supports alpha channel (information about opacity of pixels). |
|  | [Height](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_Bitmap_Height.htm.md) | Returns current bitmap height in pixels. |
|  | [HorizontalResolution](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_UnitConverterObject_HorizontalResolution.htm.md) | Specifies horizontal resolution of the image (also known as DPI, dots per inch).
(Inherited from [UnitConverterObject](https://www.graphicsmill.com/docs/gm5/T_Aurigma_GraphicsMill_UnitConverterObject.htm.md).) |
|  | [IsCmyk](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_Bitmap_IsCmyk.htm.md) | Indicates if color space of current bitmap is CMYK. |
|  | [IsDisposed](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_LockableObject_IsDisposed.htm.md) | (Inherited from [LockableObject](https://www.graphicsmill.com/docs/gm5/T_Aurigma_GraphicsMill_LockableObject.htm.md).) |
|  | [IsEmpty](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_Bitmap_IsEmpty.htm.md) | Indicates if bitmap is empty (no bitmap data loaded). |
|  | [IsExtended](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_Bitmap_IsExtended.htm.md) | Indicates if current pixel format is extended (i.e. 16 bits per channel). |
|  | [IsGrayScale](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_Bitmap_IsGrayScale.htm.md) | Indicates if color space of current bitmap is grayscale. |
|  | [IsIndexed](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_Bitmap_IsIndexed.htm.md) | Indicates if current bitmap is indexed (palette-based). |
|  | [IsRgb](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_Bitmap_IsRgb.htm.md) | Indicates if color space of current bitmap is RGB. |
|  | [Locked](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_LockableObject_Locked.htm.md) | Indicates if the object has been locked.
(Inherited from [LockableObject](https://www.graphicsmill.com/docs/gm5/T_Aurigma_GraphicsMill_LockableObject.htm.md).) |
|  | [LogicalHeight](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_Bitmap_LogicalHeight.htm.md) | Returns current bitmap height in units specified with [Unit](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_UnitConverterObject_Unit.htm.md) property. |
|  | [LogicalWidth](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_Bitmap_LogicalWidth.htm.md) | Returns current bitmap width in units specified with [Unit](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_UnitConverterObject_Unit.htm.md) property. |
|  | [MaxUndoStepCount](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_Bitmap_MaxUndoStepCount.htm.md) | Gets/sets maximum number of available undo steps (levels). |
|  | [MemoryUsed](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_Bitmap_MemoryUsed.htm.md) | Returns a number of bytes occupied with pixels of this [Bitmap](https://www.graphicsmill.com/docs/gm5/T_Aurigma_GraphicsMill_Bitmap.htm.md). |
|  | [Modified](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_Bitmap_Modified.htm.md) | Indicates if the bitmap was changed since last saving. |
|  | [Palette](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_Bitmap_Palette.htm.md) | Returns palette accosiated with bitmap. |
|  | [PixelFormat](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_Bitmap_PixelFormat.htm.md) | Returns pixel format of the current bitmap. |
|  | [RedoStepCount](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_Bitmap_RedoStepCount.htm.md) | Returns number of available redo levels (i.e. how much time method [Redo()](https://www.graphicsmill.com/docs/gm5/M_Aurigma_GraphicsMill_Bitmap_Redo.htm.md) can be called). |
|  | [Statistics](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_Bitmap_Statistics.htm.md) | Returns an object providing methods which retrieves bitmap stats (like histogram, etc). |
|  | [Timeout](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_LockableObject_Timeout.htm.md) | Gets/sets value specifying maximum time for which object can be locked.
(Inherited from [LockableObject](https://www.graphicsmill.com/docs/gm5/T_Aurigma_GraphicsMill_LockableObject.htm.md).) |
|  | [Transforms](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_Bitmap_Transforms.htm.md) | Returns object providing methods which are responsible for geometric transformations of the bitmap (resize, rotate, crop, swirl, etc). |
|  | [UndoRedoEnabled](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_Bitmap_UndoRedoEnabled.htm.md) | Enables or disables undo/redo functionality. |
|  | [UndoRedoTrackingEnabled](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_Bitmap_UndoRedoTrackingEnabled.htm.md) | Enables or disables the automatic change tracking. |
|  | [UndoStepCount](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_Bitmap_UndoStepCount.htm.md) | Returns number of available undo levels (i.e. how much time method [Undo()](https://www.graphicsmill.com/docs/gm5/M_Aurigma_GraphicsMill_Bitmap_Undo.htm.md) can be called). |
|  | [Unit](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_UnitConverterObject_Unit.htm.md) | Gets/sets unit to convert from/to.
(Inherited from [UnitConverterObject](https://www.graphicsmill.com/docs/gm5/T_Aurigma_GraphicsMill_UnitConverterObject.htm.md).) |
|  | [VerticalResolution](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_UnitConverterObject_VerticalResolution.htm.md) | Specifies vertical resolution (also known as DPI, dots per inch).
(Inherited from [UnitConverterObject](https://www.graphicsmill.com/docs/gm5/T_Aurigma_GraphicsMill_UnitConverterObject.htm.md).) |
|  | [Width](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_Bitmap_Width.htm.md) | Returns current bitmap width in pixels. |
## See Also
### Reference
- [Bitmap Class](https://www.graphicsmill.com/docs/gm5/T_Aurigma_GraphicsMill_Bitmap.htm.md)
- [Aurigma.GraphicsMill Namespace](https://www.graphicsmill.com/docs/gm5/N_Aurigma_GraphicsMill.htm.md)