Using GDI+ from MFC C++ ???
in [MFC]
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From: Peter Olcott on 1 Mar 2010 16:06 All of the links that I have found say they are showing you how to use GDI+ from C++, by they actually show you how to use GDI+ from C, not C++. For example they show you how to modify the WinMain() function. There is no WinMain() function in my MFC code. I want to be able to load and save PNG files and BMP files. Since Windows now does this, I would prefer to use Windows instead of any third party library.
From: David Lowndes on 1 Mar 2010 16:25 >All of the links that I have found say they are showing you >how to use GDI+ from C++, by they actually show you how to >use GDI+ from C, not C++. For example they show you how to >modify the WinMain() function. There is no WinMain() >function in my MFC code. Just because it's using WinMain doesn't necessarily mean it's using 'C' rather than C++. Anyhow, what code are these examples putting in WinMain that is posing you with a problem? Dave
From: Peter Olcott on 1 Mar 2010 16:34 "David Lowndes" <DavidL(a)example.invalid> wrote in message news:f1coo5t5u8kc3q3q8n3rbiqd97v05fo1kd(a)4ax.com... > >All of the links that I have found say they are showing > >you >>how to use GDI+ from C++, by they actually show you how to >>use GDI+ from C, not C++. For example they show you how to >>modify the WinMain() function. There is no WinMain() >>function in my MFC code. > > Just because it's using WinMain doesn't necessarily mean > it's using > 'C' rather than C++. > > Anyhow, what code are these examples putting in WinMain > that is posing > you with a problem? Now I have the problem simplified down to this command line code sample will not compile: http://msdn.microsoft.com/en-us/library/ms533837(VS.85).aspx I am getting a bunch of link errors, here is one of them: gdipng.obj : error LNK2019: unresolved external symbol _GdipFree@4 referenced in function "public: static void __cdecl Gdiplus::GdiplusBase::operator delete(void *)" > > Dave
From: David Ching on 1 Mar 2010 16:41 "Peter Olcott" <NoSpam(a)OCR4Screen.com> wrote in message news:W7mdncFCK47CsRHWnZ2dnUVZ_v-dnZ2d(a)giganews.com... > All of the links that I have found say they are showing you how to use > GDI+ from C++, by they actually show you how to use GDI+ from C, not C++. > For example they show you how to modify the WinMain() function. There is > no WinMain() function in my MFC code. > You may want to read about CImage. -- David
From: David Ching on 1 Mar 2010 16:41 "Peter Olcott" <NoSpam(a)OCR4Screen.com> wrote in message news:rfKdndhqLPufrhHWnZ2dnUVZ_vOdnZ2d(a)giganews.com... > Now I have the problem simplified down to this command line code sample > will not compile: > http://msdn.microsoft.com/en-us/library/ms533837(VS.85).aspx > I am getting a bunch of link errors, here is one of them: > > gdipng.obj : error LNK2019: unresolved external symbol _GdipFree@4 > referenced in function "public: static void __cdecl > Gdiplus::GdiplusBase::operator delete(void *)" > Are you linking with gdiplus.lib? This needs to go into the Linker settings, I believe in the Additional Dependencies option. -- David
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