Thread: How Can I Find the Default Browser?

just wondering how i could find the default browser in windows. im runnin xp home fyi.

thanks for any help in advance.

You can save some leg work by getting AssocQueryString to search the registry for you.

Code:

#include <windows.h>
#include <shlwapi.h>
#include <stdio.h>

#if defined (_MSC_VER)
#pragma comment(lib, "shlwapi.lib")
#elif defined (__LCC__)
#pragma lib<shlwapi.lib>
#endif

#define ARRAY_SIZE(arr) (sizeof(arr)/sizeof((arr)[0]))

int main(void)
{
	HRESULT hr;
	TCHAR szExe[MAX_PATH + 100];
	DWORD cchExe = ARRAY_SIZE(szExe);

	if (SUCCEEDED(hr = AssocQueryString(0, ASSOCSTR_EXECUTABLE,
	                                    TEXT("http"), TEXT("open"), szExe, &cchExe)))
	{
		printf("Path to default browser is '%s'.\n", szExe);
	}
	else
	{
		printf("Failed with error 0x%08.8x.", hr);
	}

	getchar();
	return 0;
}

Note: In my version of Dev-C++/Mingw, there is an error in shlwapi.h that will cause this code to give incorrect results. Lines 60-63 are:

Code:

typedef enum {
    ASSOCSTR_COMMAND,
    ASSOCSTR_EXECUTABLE,
    ASSOCSTR_FRIENDLYDOCNAME,

instead of:

Code:

typedef enum {
    ASSOCSTR_COMMAND      = 1, 
    ASSOCSTR_EXECUTABLE,
    ASSOCSTR_FRIENDLYDOCNAME,