Visual Studio 跳过代码行

Question

I have been working on a program in which I use the EnumWindows function to detect active Windows and save their handles in a list. Now, everytime I run what I have so far the debugger just skips the line with the EnumWindows function without returning an error.

Is there something wrong with my code? Or do I have to get an additional library to access this function? Hope someone knows how to fix this Here is the code of the class which contains EnumWindows:

Center :: Center(int initInterval) : interval(initInterval)
{
    detectWindows();
}

int Center :: getInterval()
{
    return interval;
}
void Center :: setInterval(int intrvl)
{
    interval = intrvl;
}

void Center :: initializeDisplays()
{

}

void Center :: detectWindows()
{
    EnumWindows(detectWindowsProc, (LPARAM)&windowList);  //Debugger skips this line
}

Answer 1

Code shouldn't be just skipped, typically this is a sign of your source/exe/ and PDB files being out of sync. Clean your project and try again (remove all.exe, obj, pdbs) and ensure you are doing a debug build.

Check Debug->Windows->Modules. I just tested a similar scenario, worked fine on breakpoints. Check the timestamp of your PDB as shown here to ensure its up to date

Answer 2

What do you mean by 'skips the line'? The debugger will step over it, execute it, but will not be able to step in to it because you have no debug information available for the windows functions. Normally if you put a breakpoint in your detectWindowsProc that breakpoint should be hit. Provided there are windows to enumerate, EnumWindows has some strange quirks, see MSDN and comments there for more info: EnumWindows function

Answer 3

I also had face this issue. For me.pdb file was not in sync with.dll I updated the dll and pdb and issue was fixed.