扩展DLL链接问题 [英] Extension Dll Linking Problem

问题描述

你好朋友我是一个更新鲜尝试学习MFC VC ++ ..我正在尝试构建和使用其他DLL函数的DLL。我已在属性和包含路径中指定了lib路径。但我仍然得到这些链接错误'。





错误1515错误LNK2019：未解析的外部符号_png_info_init在函数public中引用：？？？？虚拟INT __thiscall CImagePNG :: ReadFile的（类ATL :: CStringT<炭，类>>>常量&）（ReadFile的@ CImagePNG @@ UAEHABV $ CStringT @ DV $ StrTraitMFC_DLL @ DV $ ChTraitsCRT @ d @ATL @@@@@ ATL @@@ Z）I：\cpoy2 ProjectVS2010\ProjectVS2010\DLLWorkspaces\WidgetControls\WidgetControls\Image.lib（Imapng.obj）

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错误1514的错误LNK2019：解析外部符号函数_png_read_init引用公共：虚拟INT __thiscall CImagePNG :: ReadFile的（类ATL :: CStringT<炭，类>>>常量&）？？？？（ReadFile的@ CImagePNG @@ UAEHABV $ CStringT @ DV $ StrTraitMFC_DLL @ DV $ ChTraitsCRT @ d @ ATL @@@ @@ ATL @@@ Z）I：\cpoy2 ProjectVS2010 \ ProjectVS2010 \DLLWorkspaces \WidgetControls \WidgetControls \ Image.lib（Imapng.o bj）









错误1516错误LNK2019：未解析的外部符号_png_write_init在函数public：virtual int __thiscall CImagePNG :: SaveFile中引用（类ATL :: CStringT< char，class> > >常量和，INT）（SAVEFILE @ CImagePNG @@ UAEHABV $ @ CStringT DV $ @ StrTraitMFC_DLL DV $ @ ChTraitsCRT @ d ATL @@@@@ ATL @@ H + Z）I：？？？？\cpoy2 ProjectVS2010\\ \\ProjectVS2010\DLLWorkspaces\WidgetControls\WidgetControls\Image.lib（Imapng.obj）

解决方案

CStringT @ DV？

StrTraitMFC_DLL @ DV？

ChTraitsCRT @ D @ ATL @@@@@ ATL @@@ Z）I：\cpoy2 ProjectVS2010 \ ProjectVS2010 \DLLWorkspaces \WidgetControls \\ \\ WidgetControls \ Image.lib（Imapng.obj）









错误1514错误LNK2019：未解析的外部符号_png_read_init在函数public：virtual int __thiscall CImagePNG :: ReadFile（class ATL :: CStringT< char，class>>> const&）中引用（？ReadFile @ CImagePNG @@ UAEHABV？

Hello friends i a fresher trying to learn MFC VC++ .. I am trying to Build and dll which uses function from other dll. I have specified the lib path in properties and Include path too. but i am still getting these linking error''s.


Error 1515 error LNK2019: unresolved external symbol _png_info_init referenced in function "public: virtual int __thiscall CImagePNG::ReadFile(class ATL::CStringT<char,class> > > const &)" (?ReadFile@CImagePNG@@UAEHABV?$CStringT@DV?$StrTraitMFC_DLL@DV?$ChTraitsCRT@D@ATL@@@@@ATL@@@Z) I:\cpoy2 ProjectVS2010\ProjectVS2010\DLLWorkspaces\WidgetControls\WidgetControls\Image.lib(Imapng.obj)




Error 1514 error LNK2019: unresolved external symbol _png_read_init referenced in function "public: virtual int __thiscall CImagePNG::ReadFile(class ATL::CStringT<char,class> > > const &)" (?ReadFile@CImagePNG@@UAEHABV?$CStringT@DV?$StrTraitMFC_DLL@DV?$ChTraitsCRT@D@ATL@@@@@ATL@@@Z) I:\cpoy2 ProjectVS2010\ProjectVS2010\DLLWorkspaces\WidgetControls\WidgetControls\Image.lib(Imapng.obj)




Error 1516 error LNK2019: unresolved external symbol _png_write_init referenced in function "public: virtual int __thiscall CImagePNG::SaveFile(class ATL::CStringT<char,class> > > const &,int)" (?SaveFile@CImagePNG@@UAEHABV?$CStringT@DV?$StrTraitMFC_DLL@DV?$ChTraitsCRT@D@ATL@@@@@ATL@@H@Z) I:\cpoy2 ProjectVS2010\ProjectVS2010\DLLWorkspaces\WidgetControls\WidgetControls\Image.lib(Imapng.obj)

解决方案

CStringT@DV?

StrTraitMFC_DLL@DV?

ChTraitsCRT@D@ATL@@@@@ATL@@@Z) I:\cpoy2 ProjectVS2010\ProjectVS2010\DLLWorkspaces\WidgetControls\WidgetControls\Image.lib(Imapng.obj)




Error 1514 error LNK2019: unresolved external symbol _png_read_init referenced in function "public: virtual int __thiscall CImagePNG::ReadFile(class ATL::CStringT<char,class> > > const &)" (?ReadFile@CImagePNG@@UAEHABV?

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