---
title: "Bitmap..::.Draw Method (IntPtr, Single, Single, Single, Single, Single, Single, Single, Single, CombineMode, Single, InterpolationMode)"
canonical: https://www.graphicsmill.com/docs/gm5/M_Aurigma_GraphicsMill_Bitmap_Draw_12_72e95bbd.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.Draw Method (IntPtr, Single, Single, Single, Single, Single, Single, Single, Single, CombineMode, Single, InterpolationMode)
 
Draws current bitmap on given Windows GDI device context (represented as handle to device context, i.e. HDC).
 
**Namespace:** [Aurigma.GraphicsMill](https://www.graphicsmill.com/docs/gm5/N_Aurigma_GraphicsMill.htm.md)
 **Assembly:** Aurigma.GraphicsMill (in Aurigma.GraphicsMill.dll)
 
## Syntax
  
```
Public Sub Draw ( _hdc As IntPtr, _destinationX As Single, _destinationY As Single, _destinationWidth As Single, _destinationHeight As Single, _sourceX As Single, _sourceY As Single, _sourceWidth As Single, _sourceHeight As Single, _combine As CombineMode, _opacity As Single, _interpolationMode As InterpolationMode _
)
```
 
```csharp
public void Draw(IntPtr hdc,float destinationX,float destinationY,float destinationWidth,float destinationHeight,float sourceX,float sourceY,float sourceWidth,float sourceHeight,CombineMode combine,float opacity,InterpolationMode interpolationMode
)
```
 
### Parameters
 
 - hdc
     - Type: [System.IntPtr](http://msdn2.microsoft.com/en-us/5he14kz8)
Target handle to device context (on which current bitmap should be drawn).

 - destinationX
     - Type: [System.Single](http://msdn2.microsoft.com/en-us/3www918f)
Horizontal position of left-top corner of the destination rectangle.

 - destinationY
     - Type: [System.Single](http://msdn2.microsoft.com/en-us/3www918f)
Vertical position of left-top corner of the destination rectangle.

 - destinationWidth
     - Type: [System.Single](http://msdn2.microsoft.com/en-us/3www918f)
Width of the destination rectangle. You can pass 0 to indicate that method should calculate width automatically (see **Remarks** section for details).

 - destinationHeight
     - Type: [System.Single](http://msdn2.microsoft.com/en-us/3www918f)
Height of the destination rectangle. You can pass 0 to indicate that method should calculate height automatically (see **Remarks** section for details).

 - sourceX
     - Type: [System.Single](http://msdn2.microsoft.com/en-us/3www918f)
Horizontal position of left-top corner of the source rectangle.

 - sourceY
     - Type: [System.Single](http://msdn2.microsoft.com/en-us/3www918f)
Vertical position of left-top corner of the source rectangle.

 - sourceWidth
     - Type: [System.Single](http://msdn2.microsoft.com/en-us/3www918f)
Width of the source rectangle. You can pass 0 to indicate that method should calculate width automatically (see **Remarks** section for details).

 - sourceHeight
     - Type: [System.Single](http://msdn2.microsoft.com/en-us/3www918f)
Height of the source rectangle. You can pass 0 to indicate that method should calculate height automatically (see **Remarks** section for details).

 - combine
     - Type: [Aurigma.GraphicsMill.Transforms.CombineMode](https://www.graphicsmill.com/docs/gm5/T_Aurigma_GraphicsMill_Transforms_CombineMode.htm.md)
Algorithm of images blending (plain pixels copying, alpha blending, bitwise operations, etc).

 - opacity
     - Type: [System.Single](http://msdn2.microsoft.com/en-us/3www918f)
A number in range [0, 1] specifying total opacity of the image. If 0, image is completely transparent, if 1, image is completely opaque.

 - interpolationMode
     - Type: [Aurigma.GraphicsMill.Transforms.InterpolationMode](https://www.graphicsmill.com/docs/gm5/T_Aurigma_GraphicsMill_Transforms_InterpolationMode.htm.md)
Algorithm of resizing. Using this parameter you can select between speed and quality of resizing.
 
## Remarks
  
Pixels from source rectangle of current bitmap are drawn to destination rectangle on the given HDC. If source rectangle dimensions differ from dimensions of destination rectangle, pixels are resized to have the same size as destination rectangle.
 
**Note** 
If bitmap has pixel format which is not GDI-compatible (e.g. extended pixel formats, CMYK, etc) method will automatically create a copy converted to the [Format32bppArgb](https://www.graphicsmill.com/docs/gm5/T_Aurigma_GraphicsMill_PixelFormat.htm.md). That's why you always get it drawn, but if you are going to call this method multiple times, it is recommended to convert it to some GDI-compatible format (like [Format32bppArgb](https://www.graphicsmill.com/docs/gm5/T_Aurigma_GraphicsMill_PixelFormat.htm.md)) to increase the performance.
 
If you want method to calculate width and height automatically, you can pass 0 to these arguments. It will be calculated with the following way:
 
1. If both width and heigth (both for source and destination rectangles) are 0, it will take source image dimensions ([Width](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_Bitmap_Width.htm.md) and [Height](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_Bitmap_Height.htm.md) properties). This way no resize will be done during drawing.
2. If only one of arguments is 0, it will calculate this argument to save proportion. For example, source image is 800x600, and you pass 400 as width and 0 as height. Height will be calculated to preserve aspect ratio of the image, i.e. it will be equal to 300.

All coordinates are measured in units specified with [Unit](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_UnitConverterObject_Unit.htm.md) property of the source bitmap.
   
## See Also

### Reference

- [Bitmap Class](https://www.graphicsmill.com/docs/gm5/T_Aurigma_GraphicsMill_Bitmap.htm.md)
- [Draw Overload](https://www.graphicsmill.com/docs/gm5/O_T_Aurigma_GraphicsMill_Bitmap_Draw.htm.md)
- [Aurigma.GraphicsMill Namespace](https://www.graphicsmill.com/docs/gm5/N_Aurigma_GraphicsMill.htm.md)

### Manual

- [Combine Modes](https://www.graphicsmill.com/docs/gm5/CombineModes.htm.md)