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AlphaBlend (gdi32)
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C# Signature:
[DllImport("gdi32.dll", EntryPoint="GdiAlphaBlend")]
public static extern bool AlphaBlend(IntPtr hdcDest, int nXOriginDest, int nYOriginDest,
int nWidthDest, int nHeightDest,
IntPtr hdcSrc, int nXOriginSrc, int nYOriginSrc, int nWidthSrc, int nHeightSrc,
BLENDFUNCTION blendFunction);
VB Signature:
Public Declare Function AlphaBlend Lib "gdi32.dll" Alias "GdiAlphaBlend"
(ByVal hdcDest As IntPtr, ByVal nXOriginDest As Integer, ByVal nYOriginDest As Integer,
ByVal nWidthDest As Integer, ByVal nHeightDest As Integer,
ByVal hdcSrc As IntPtr, ByVal nXOriginSrc As Integer, ByVal nYOriginSrc As Integer,
ByVal nWidthSrc As Integer, ByVal nHeightSrc As Integer,
ByVal blendFunction As BLENDFUNCTION) As Boolean
ByVal is a VB keyword that specifies a variable to be passed as a parameter BY VALUE. In other words, if the function or sub changes the value of the internal variable, it does not change the value of the external variable that was passed to it.
4/25/2007 3:19:55 AM - josep1er@cmich.edu-141.209.229.179
An IntPtr is a pointer to a memory location (unmanaged) that adapts to the platform it is running on (64-bit, etc.) UNLIKE a standard int/Integer. You should always use this type for unmanaged calls that require it, even though an int will appear to work on your development machine.
1/13/2008 4:00:13 AM - Damon Carr-72.43.165.29
ByVal is a VB keyword that specifies a variable to be passed as a parameter BY VALUE. In other words, if the function or sub changes the value of the internal variable, it does not change the value of the external variable that was passed to it.
4/25/2007 3:19:55 AM - josep1er@cmich.edu-141.209.229.179
ByVal is a VB keyword that specifies a variable to be passed as a parameter BY VALUE. In other words, if the function or sub changes the value of the internal variable, it does not change the value of the external variable that was passed to it.
4/25/2007 3:19:55 AM - josep1er@cmich.edu-141.209.229.179
TODO - a short description
3/16/2007 8:17:31 AM - -63.69.129.2
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