🔒 Locked

Compiler calling wrong overloaded functions?

Started by VanillaSnake21 Apr 2, 2009 at 4:10 PM 7 replies 1.3k views

Original Post

Apr 2, 2009 at 4:10 PM

I'm using GDI+ and I'm trying to call DrawImage() with ImageAttributes, this is what my call looks like:


grx.DrawImage(ImgIter->second.pImage, (Gdiplus::RectF*)&rc, ImgIter->second.XPos,ImgIter->second.YPos, ImgIter->second.Width, ImgIter->second.Height, Gdiplus::UnitPixel, &ia);

I get this error:



error C2664: 'Gdiplus::Status Gdiplus::Graphics::DrawImage(Gdiplus::Image *,Gdiplus::REAL,Gdiplus::REAL,Gdiplus::REAL,Gdiplus::REAL,Gdiplus::REAL,Gdiplus::REAL,Gdiplus::Unit)' : cannot convert parameter 2 from 'Gdiplus::RectF *' to 'Gdiplus::REAL'

As you can see the compiler is calling the version with almost all Reals as params, but thats not what I'm passing to the function. I tried explicitly naming (casting to themselves) the parameters, but still nothing. What could be causing this?

SiCrane

Apr 2, 2009 at 4:21 PM

Graphics::DrawImage() has 18 overloads. Only one of them accepts a RectF * as the second argument, and it takes 6 parameters, not 8.

VanillaSnake21

Apr 2, 2009 at 4:34 PM

Quote:
Original post by SiCrane
Graphics::DrawImage() has 18 overloads. Only one of them accepts a RectF * as the second argument, and it takes 6 parameters, not 8.

So why is intellisense only showing me 16? I followed one of the layouts (version 12) that intellisense gave me.

Zahlman

Apr 2, 2009 at 4:35 PM

Okay, I'll bite. What overloads does Intellisense list?

VanillaSnake21

Apr 2, 2009 at 4:46 PM

Quote:
Original post by Zahlman
Okay, I'll bite. What overloads does Intellisense list?

Umm, you want me to list all of them?
I'll just tell you the one I followed:

DrawImage(Gdiplus::Image*, Gdiplus::RectF, Gdiplus::REAL srcx, Gdiplus::REAL srcy, Gdiplus::REAL srcwidth, Gdiplus::REAL srcheight, Gdiplus::Unit, Gdiplus::ImageAttributes, Gdiplus::DrawImageAbbort callback = 0, void* callbackData = 0)

SiCrane

Apr 2, 2009 at 4:48 PM

RectF != RectF *

VanillaSnake21

Apr 2, 2009 at 4:55 PM

Quote:
Original post by SiCrane
RectF != RectF *

lol... well actually int the intellisense version it says Rect&, but I was passing it a pointer, I hate these small mistakes. Thanks :)

Zahlman

Apr 2, 2009 at 5:01 PM

What exactly is 'rc', then? Have you considered that the function expects the value by (non-const) reference because it expects to change the underlying data?

SiCrane

Apr 2, 2009 at 5:14 PM

Actually, all the DrawImage() overloads that accept RectF references use const references.

Topic Locked

This topic has been locked by a moderator. New replies are not allowed.