Draws the current bitmap on a given Windows GDI device context (represented as handle to device context, i.e. HDC).
Assembly: Aurigma.GraphicsMill (in Aurigma.GraphicsMill.dll)
public void DrawOn( IntPtr hdc, int destinationX, int destinationY, int destinationWidth, int destinationHeight, CombineMode combine, float opacity, ResizeInterpolationMode interpolationMode )
Type: System..IntPtrA handle to device context on which the current bitmap should be drawn.
Type: System..Int32The x-coordinate of the upper-left corner of the drawn image.
Type: System..Int32The y-coordinate of the upper-left corner of the drawn image.
Type: System..Int32Width of the drawn image.
Type: System..Int32Height of the drawn image.
Type: System..SingleThe opacity of the image in range
[0, 1]. If
0, image is completely transparent, if
1, image is completely opaque.
The bitmap is drawn to the destination rectangle on the given System.Drawing.Graphics object with dimensions equal to the dimensions of the bitmap.
If the 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. That's why you always get it drawn, but if you are going to call this method multiple times, it is recommended to convert the bitmap to some GDI-compatible format (like Format32bppArgb) to increase the performance.
If you want this method to calculate width and height automatically, you can pass
0 to the corresponding arguments. The dimensions will be calculated with the following way:
0, it will take source image dimensions (Width and Height properties). This way the image will not be resized during drawing.
0, it will calculate this argument to save proportion. For example, the source image is
800x600, and you pass
400as width and
0as height. Height will be calculated to preserve aspect ratio of the image, i.e. it will be