怎样判断DLL是32位还是64位的

首先确保已经安装visual studio，然后在安装路径下搜索dumpbin.exe 进入dumpbin.exe所在的文件夹，打开终端。（直接在路径框下输入cmd，回车） 然后输入下面指令即可查询：

dumpbin.exe /headers [dll文件路径] | find "machine"

示例：

D:VS2019VCToolsMSVC14.29.30133inHostx64x86>dumpbin.exe /headers E:zhankunprogram_githubAg_PlanAlgoHnAlgorithmincludeHnAlgorithm3.dll |find "machine"

D:VS2019VCToolsMSVC14.29.30133inHostx64x86>dumpbin.exe /headers E:zhankunprogram_githubAg_PlanAlgoother_demoGPV_pathplantoolHnAlgorithm3.dll |find "machine"

D:VS2019VCToolsMSVC14.29.30133inHostx64x86>dumpbin.exe /headers E:zhankunprogram_githubAg_PlanAlgoother_demoGPV_pathplantoolHnAlgorithm2.dll |find "machine"
            8664 machine (x64)

D:VS2019VCToolsMSVC14.29.30133inHostx64x86>dumpbin.exe /headers E:zhankunprogram_githubAg_PlanAlgoother_demoGPV_pathplantoolHnAlgorithm.dll |find "machine"
             14C machine (x86)
                   32 bit word machine