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设置Windows 8.1屏幕自动旋转代码, Auto-rotate function code

程序代码实现启用或禁用Windows 8.1 Tablet的自动旋转功能

方法一:使用SetDisplayAutoRotationPreferences函数功能

#include <Windows.h>

/*
typedef enum ORIENTATION_PREFERENCE {   
	ORIENTATION_PREFERENCE_NONE              = 0x0,   
	ORIENTATION_PREFERENCE_LANDSCAPE         = 0x1,   
	ORIENTATION_PREFERENCE_PORTRAIT          = 0x2,   
	ORIENTATION_PREFERENCE_LANDSCAPE_FLIPPED = 0x4,   
	ORIENTATION_PREFERENCE_PORTRAIT_FLIPPED  = 0x8
}ORIENTATION_PREFERENCE; 
*/
typedef BOOL (WINAPI *pSDARP)(ORIENTATION_PREFERENCE orientation);
pSDARP pARP;


int main(int argc, char* argv[])
{
	pARP = (pSDARP) GetProcAddress( GetModuleHandle(TEXT("user32.dll")),  
									"SetDisplayAutoRotationPreferences"); 
	if( pARP ){
		if (atoi(argv[1]) == 0){
			pARP( (ORIENTATION_PREFERENCE)(ORIENTATION_PREFERENCE_LANDSCAPE | ORIENTATION_PREFERENCE_LANDSCAPE_FLIPPED) );
		}
		if (atoi(argv[1]) == 1){
			pARP( (ORIENTATION_PREFERENCE)(ORIENTATION_PREFERENCE_NONE) );
		}

	}else{
		printf("System not supported.\t");
		return 1;
	}
	return 0;
}
方法二:通过写入注册表Enable来设置。1表示启用自动旋转,0为禁止自动旋转

具体Key的位置如下:

KEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\AutoRotation