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在ATL无窗口ActiveX 控件中如何使用定时器？ - 其他 - 清泛IT社区，为创新赋能！
...; // 定时器消息的窗口句柄
UINT message, // WM_TIMER 消息
INT_PTR idTimer, // 定时器标志
DWORD dwTime) // 当前系统启动计时
{
...
}
...
Command line to remove an environment variable from the OS level configuration
... public static extern IntPtr SendMessageTimeout(
IntPtr hWnd, uint Msg, UIntPtr wParam, string lParam,
uint fuFlags, uint uTimeout, out UIntPtr lpdwResult);
"@
}
$HWND_BROADCAST = [intptr]0xffff;
$WM_SETTINGCHANGE = 0x1a;
$result = [uintptr]::zero
[win32.nativemeth...
Get int value from enum in C#
...ut, enums can have different underlying types.
If an enum is declared as a uint, long, or ulong, it should be cast to the type of the enum; e.g. for
enum StarsInMilkyWay:long {Sun = 1, V645Centauri = 2 .. Wolf424B = 2147483649};
you should use
long something = (long)StarsInMilkyWay.Wolf424B;
...
When should I use malloc in C and when don't I?
...ory leaks when using malloc. Consider this code:
int do_something() {
uint8_t* someMemory = (uint8_t*)malloc(1024);
// Do some stuff
if ( /* some error occured */ ) return -1;
// Do some other stuff
free(someMemory);
return result;
}
Do you see what's wrong with this c...
'size_t' vs 'container::size_type'
...ct type, so for example one knows where the type wraps around to (like, to UINT_MAX) so that one can make use of that. Or for templates, where you really need to pass two identical types to function/class templates.
Often i find i use size_t for brevity or iterators anyway. In generic code, since y...
How to convert a string of bytes into an int?
...
"L" is actually uint32 (4 bytes). If as in my case you need 8 bytes, use "Q"-->uint64. Also note that "l"-->int32 and q-->int64
– ntg
May 31 '17 at 6:26
...
Better way to get type of a Javascript variable?
... The regex would also need to include numbers for things like Uint8Array. Instead, consider the more general match(/\s([^\]]+)/) which should handle anything.
– Lily Finley
Jan 19 '15 at 22:43
...
Printing hexadecimal characters in C
...ng and 2 to set the width to 2. x or X for lower/uppercase hex characters.
uint8_t a = 0x0a;
printf("%02hhX", a); // Prints "0A"
printf("0x%02hhx", a); // Prints "0x0a"
Edit: If readers are concerned about 2501's assertion that this is somehow not the 'correct' format specifiers I suggest they rea...
What is boxing and unboxing and what are the trade offs?
...
Javascript has so called typed arrays (new UInt32Array etc) which are arrays of unboxed ints and floats.
– nponeccop
Jun 30 '12 at 6:03
add a c...
Predicate Delegates in C#
...{ get; set; }
public string Node_Name { get; set; }
public uint Node_Area { get; set; }
}
}
Main class -
using System;
using System.Threading;
using System.Collections.Generic;
namespace PredicateExample
{
class Program
{
static void Main(string[] args)
...