Jinvoke

--------------------------------------------Java Call Win32 API-----------------------------------------

下载地址：http://www.jinvoke.com/calling-the-win32-api-from-java

 

简单的例子：

 

import com.jinvoke.JInvoke;
import com.jinvoke.NativeImport;

public class HelloWindows {
	
	@NativeImport(library="User32",function="MessageBox")
	public static native int showMessage(int hwnd,String text,String caption,int type);
	
	public static void main(String[] args){
		JInvoke.initialize();
		showMessage(0,"Hello welcome","hello-world",0);
	}	
}

 

 

注解方式有三种：

1 @NativeImport 连接上本地DLL，调用DLL内的方法

2 @NativeStruct represent a native structure (a C struct) as a Java class.

3 @Embedded define fixed-size strings and arrays in structs.

 

--------------------------------@NativeStruct例子--------------------------------------------------

Struct C :

 

typedef struct _SYSTEMTIME {
WORD wYear;
WORD wMonth;
WORD wDayOfWeek;
WORD wDay;
WORD wHour;
WORD wMinute;
WORD wSecond;
WORD wMilliseconds;
} SYSTEMTIME, *PSYSTEMTIME;

 

 java.class:

 

@NativeStruct
public class SYSTEMTIME {
public short wYear;
public short wMonth;
public short wDayOfWeek;
public short wDay;
public short wHour;
public short wMinute;
public short wSecond;
public short wMilliseconds;
}

 

-------------------------------------@Embedded例子------------------------------------------------------

Struct C:

 

typedef struct _SHFILEINFO {
HICON hIcon;
int iIcon;
DWORD dwAttributes;
TCHAR szDisplayName[MAX_PATH];
TCHAR szTypeName[80];
} SHFILEINFO;

 java.class

 

@NativeStruct
public class ShFileInfo {
public int hIcon;
public int iIcon;
public int dwAttributes;
@Embedded(length=260)
public StringBuffer szDisplayName = new StringBuffer(260);
@Embedded(length=80)
public StringBuffer szTypeName = new StringBuffer(80);
}