天试了一下这个, 记录下来, 以后我给自己做小工具时, 肯定用的到.
注册/注销全局快捷键需要用user32.dll中的这两个api:
所以使用C#注册全局快捷键就是要用C#调用user32.dll中的这两个函数,
问题1 C#调用dll
这其中涉及的问题有:
1.为了使用[DllImport("user32.dll")], 要先using System.Runtime.InteropServices;
2.import的函数要用static extern来修饰.
关于C#调用dll的介绍可以参考下面这几个链接:
Calling Win32 DLLs in C# with P/Invoke
这两个link一个是中文版, 一个是英文版, 还有代码示例可以下载. 其中还有个类型映射表, 比较有帮助.
这些都是基本类型, 指针的后面有说明.
| Win32 Types | Specification | CLR Type |
|---|---|---|
| char, INT8, SBYTE, CHAR†| 8-bit signed integer | System.SByte |
| short, short int, INT16, SHORT | 16-bit signed integer | System.Int16 |
| int, long, long int, INT32, LONG32, BOOL†, INT | 32-bit signed integer | System.Int32 |
| __int64, INT64, LONGLONG | 64-bit signed integer | System.Int64 |
| unsigned char, UINT8, UCHAR†, BYTE | 8-bit unsigned integer | System.Byte |
| unsigned short, UINT16, USHORT, WORD, ATOM, WCHAR†, __wchar_t | 16-bit unsigned integer | System.UInt16 |
| unsigned, unsigned int, UINT32, ULONG32, DWORD32, ULONG, DWORD, UINT | 32-bit unsigned integer | System.UInt32 |
| unsigned __int64, UINT64, DWORDLONG, ULONGLONG | 64-bit unsigned integer | System.UInt64 |
| float, FLOAT | Single-precision floating point | System.Single |
| double, long double, DOUBLE | Double-precision floating point | System.Double |
| †In Win32 this type is an integer with a specially assigned meaning; in contrast, the CLR provides a specific type devoted to this meaning. | ||
还有这几篇也不错
问题2: 注册/注销全局快捷键
C#封装得真是很简单, 得到一个窗口的句柄只需要对Form调用this.Handle即可.
具体实现可以参考下面这两篇帖子:
附件是在第二个帖子基础上写的代码,他对dll中导入的api又做了一次封装, vs2008的工程.
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