Dependencies tool to view exe and DLL dependencies

Application scenarios

In the use of QT And other graphical user interface application development framework Windows The program , It is usually necessary to publish the written program to other computers for use . In the use of Qt When the program is released , Although the use of windeployqt The tool can automatically package most of the dependent libraries , However, it is inevitable that some third-party libraries will be omitted, which will make the released programs unable to run on other machines . The more common pop ups are as follows ：

Another scenario is that we are calling a third party dll library , I don't know which function interfaces there are , The dependency and calling relationship between libraries are unknown . All of these questions can be used depends Tools to help solve .

brief introduction

depends The full name of the tool is Dependency Walker, According to the name, we can roughly understand that it is a tool for detecting dependencies , Let's translate the official introduction directly ：

Dependency Walker Is a free utility , It can scan anything 32 Bit or 64 position Windows modular （exe、dll、ocx、sys etc. ）, And build the hierarchical tree of all dependent modules . For each module found , It lists all the functions exported by the module , And the functions actually called by other modules . Another view shows the minimum set of required files , And the details of each file , Include the full path of the file 、 Base address 、 Version number 、 Computer type 、 Debugging information, etc .

Dependency Walker It is also very useful for troubleshooting system errors related to loading and executing modules .Dependency Walker You can detect many common application problems , For example, the module is missing 、 Invalid module 、 Import / Export does not match 、 Circular dependency error 、 The machine type of the module does not match and the module initialization failed .

Dependency Walker Completely free to use . however , You may not benefit from distribution , Nor can it be bundled with other products .

Usage method

The software is easy to use , The installation process will not be repeated here , Get into Official website Download the software and install it normally .
After opening the software , We'll go straight to the... Where we want to see the dependencies exe Procedure or dll Drag the file to the gray area in the window , The software may get stuck for a period of time after dragging , At this time, the software is rapidly analyzing dependencies , Just wait patiently , The length of time is related to the complexity of the dependency .

After loading , You can see the dependencies in the upper left area of the window , In the middle window on the right , You can see dll Function symbols in .

If the computer does not detect the corresponding library file , Will prompt in red . We just need to find the library file in the computer where we develop the software , Adding it to the release program can solve the problem that the program cannot run on other machines .