Background Color issues in 64bit dll

nickgoodliff

Hi Mike

A weird one - I'm just testing a 64bit version of my tool, which uses the 64bit dll. All works fine except the background color that I am setting like this:

GM_Color_t white = new GM_Color_t();
white.mBlue = 255;
white.mRed = 255;
white.mGreen = 255;
GlobalMapperDLL.GM_SetBackgroundColor(white);

In the 64bit version the background color of any outputted jpgs is a pale green, instead of the white that the 32bit produces. Any ideas?

Cheers
Nick

global_mapper

Nick,

The GM_SetBackgroundColor function takes a COLORREF and not a GM_Color_t structure. It could be that in 32-bit the GM_Color_t structure happens to have the same layout as COLORREF. In C# the declaration should be:

// Sets the color to be used for background pixels when drawing and exporting
[DllImport(DLLFileName, EntryPoint = "GM_SetBackgroundColor")]
public static extern UInt32 GM_SetBackgroundColor
(
UInt32 aBgColor // (COLORREF) in: background color to set (AARRGGBB)
);

Let me know if I can be of further assistance.

Thanks,

Mike
Global Mapper Guru
geohelp@bluemarblegeo.com
Blue Marble Geographics for Coordinate Conversion, Image Reprojection and Vector Translation