c++ - CString 值在 64 位转换期间被截断

Question

当我从 Ulong64 转换为 cstring 时，值在 64 位中被截断，有人可以帮我解决这个问题吗？

HMONITOR hmonitor64;  // Hmonitor decl  
hmonitor64 = (HMONITOR)0x0000000300290eaf;// initialize to big value
ULONG64 lmonitor64;
CString strMonitor64;
lmonitor64 = (ULONG64)hmonitor64; // typecasted to long 
strMonitor64.Format(_T("%lu"), lmonitor64);  // value gets truncated in cstring

Answer 1

格式化 ULONG64 的正确方法如下:

HMONITOR hmonitor64;  // Hmonitor decl  
hmonitor64 = (HMONITOR)0x0000000300290eaf;// initialize to big value
ULONG64 lmonitor64;
CString strMonitor64;
lmonitor64 = (ULONG64)hmonitor64; // typecasted to long 
strMonitor64.Format(_T("%I64u"), lmonitor64);  // value gets truncated in cstring