This method retrieves the image from the screen device context.
[Visual Basic] [ Long =
]imagekitcontrolname.PrintDraw.GetImageFromHdc(hDC
As LONG_PTR, Width As Long, Height As Long, BitCount As
Integer)
[Visual C++] [
long =
]imagekitcontrolname.GetPrintDraw().GetImageFromHdc(LONG_PTR
hDC, long Width, long Height, short BitCount)
[VB.NET] [ Integer =
]imagekitcontrolname.PrintDraw.GetImageFromHdc(hDC
As Integer(x86) or Long(x64), Width As Integer, Height As Integer,
BitCount As Short)
[C#.NET] [ int =
]imagekitcontrolname.PrintDraw.GetImageFromHdc(int(x86)
or long(x64) hDC, int Width, int Height, short BitCount)
* (x86) refers to the 32 bit version, (x64) refers to the 64 bit version.
Parameters
| Name | Explanation |
|---|---|
| hDC | The screen device context |
| Width | The width of the retrieved image (in pixels) |
| Height | The height of the retrieved image (in pixels) |
| BitCount | The number of bits per pixels in the image you want to create |
Return Value
Returns the image handle of the raster image if successful, returns NULL (0) when not successful.
Explanation
The GetImageFromHdc method retrieves the image from the screen device context and returns it to the image data.
Note: Some components such as a PictureBox, do not always retrieve the height and width of the actual image. In such cases there can be problems with the GetImageFromHdc method retrieving the image from the screen device context.
Differences between the ImageKit7/8
The hDC argument type has changed.