How to debug a dll using visual studio?

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How to debug a dll using visual studio?

Leonardo 96

How i could debug a dll using visual studio? I have the DLL source, pdb, etc.

I tried these options:

It launches the exe but doesn't inject the DLL, by default this exe didn't load the DLL, im manually injecting it.

Isnt possible to visual studio attach the DLL? whats that option for then?

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RLWA32 51,361

The Visual Studio debugger can attach to a process.

Once a DLL is loaded into the process being debugged the debugger should be able to debug the loaded DLL assuming that its source code is available. Otherwise, you would have to use the Disassembly window.

Exactly how are you "manually injecting" your DLL into the test.exe process? Maybe the process exits too quickly. One thing you can try is to use some code in the DLL to give you time to act. For example, the DLL could use a call to MessageBox() after it has been "injected". At that time you could do what you need to do before you dismiss the modal dialog. Or put some kind of a delay in test.exe.

Leonardo 96 Reputation points

2022-08-15T08:16:15.853+00:00

I dint know that myself who need to load the dll into the process, i was waiting for visual studio to do this.
Inst possible from the DLL source make it attach to the process while debugging from the visual studio, i mean, when selecting the process to attach it also attach the DLL.
RLWA32 51,361 Reputation points

2022-08-15T08:24:02.07+00:00

The simple answer is to have test.exe cause the DLL to be loaded. Either have test.exe use LoadLibrary or link with the DLL's import library so that the system loads the DLL as a dependency when test.exe is started.
Leonardo 96 Reputation points

2022-08-15T08:25:29.323+00:00

Got it, thank you!

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