wsprintf(X64)

[six_L]

Hi,all
the high dword has been disappeared.

[jj2007]

That's unfair - values should never disappear like that ;-)

[TimoVJL]

wsprintf don't support long long in 32-bit form.
In x64 %IX is for long long / QWORD

Ix, IX
    64-bit unsigned hexadecimal integer in lowercase or uppercase on 64-bit platforms, 32-bit unsigned hexadecimal integer in lowercase or uppercase on 32-bit platforms.

Try StringCbPrintf with %llX

[jj2007]

wsprintf don't support long long in 32-bit form.

Under the hood, the JBasic version of Str$() is crt_sprintf

[six_L]

Hi jj2007,TimoVJL
Thanks you for the answer.

In x64 %IX is for long long / QWORD

[jj2007]

More precisely:

Code Select Expand

  mov rax, 0FFFFFFFFFFFFFF12h
  mov dqData, rax
  PrintLine Str$("The value is %llx", dqData)
  PrintLine Str$("The value is %llX", dqData)
  PrintLine Str$("The value is %lX", dqData)

Code Select Expand

The value is ffffffffffffff12
The value is FFFFFFFFFFFFFF12
The value is FFFFFF12

[TouEnMasm]

Not recommended by microsot wsprintf.

Note  Do not use. Consider using one of the following functions instead: StringCbPrintf, StringCbPrintfEx, StringCchPrintf, or StringCchPrintfEx. See Security Considerations.

personnaly i use sprintf who works.

[TimoVJL]

personnaly i use sprintf who works.

Windows OS sprintf is limited, probably you mean same function in msvcrt.dll or in Visual C++ runtime.