这几句代码得到的是什么，官网英文看不明白啊，新手求解

[xzh1995]

m_cxStart = GetSystemMetrics(SM_XVIRTUALSCREEN);
	m_cyStart = GetSystemMetrics(SM_YVIRTUALSCREEN);
	m_cxWidth = GetSystemMetrics(SM_CXVIRTUALSCREEN);
	m_cyHeight = GetSystemMetrics(SM_CYVIRTUALSCREEN);

[Ginie]

m_cxStart = GetSystemMetrics(SM_XVIRTUALSCREEN);  //屏幕左上角X座标   
m_cyStart = GetSystemMetrics(SM_YVIRTUALSCREEN);  //屏幕左上角Y座标
m_cxWidth = GetSystemMetrics(SM_CXVIRTUALSCREEN); //屏幕的长度  
m_cyHeight = GetSystemMetrics(SM_CYVIRTUALSCREEN);//屏幕的宽度

[xzh1995]

引用 楼主 xzh1995 的回复:

m_cxStart = GetSystemMetrics(SM_XVIRTUALSCREEN);
	m_cyStart = GetSystemMetrics(SM_YVIRTUALSCREEN);
	m_cxWidth = GetSystemMetrics(SM_CXVIRTUALSCREEN);
	m_cyHeight = GetSystemMetrics(SM_CYVIRTUALSCREEN);

为什么要加VIRTUAL还有C表示什么含义

[schlafenhamster]

X,Y,原点 CX,CY宽高

[xzh1995]

引用 1 楼 g6785654 的回复:

m_cxStart = GetSystemMetrics(SM_XVIRTUALSCREEN);  //屏幕左上角X座标   
m_cyStart = GetSystemMetrics(SM_YVIRTUALSCREEN);  //屏幕左上角Y座标
m_cxWidth = GetSystemMetrics(SM_CXVIRTUALSCREEN); //屏幕的长度  
m_cyHeight = GetSystemMetrics(SM_CYVIRTUALSCREEN);//屏幕的宽度

为什么要加VIRTUAL还有C表示什么含义

[Ginie]

额，因为它也可以针对多显示器操作，获取虚拟显示器的屏幕座标，至于C，那我也不知道了

[schlafenhamster]

windows 很多函数 都 使用，cx，cy 表示 宽高 这个 c 是 约定 SM_CXBORDER, SM_CYBORDER Width and height, in pixels, of a window border.

[Allen_zhang]

http://msdn.microsoft.com/en-us/library/windows/desktop/ms724385(v=vs.85).aspx 自己看看msdn的解释 SM_XVIRTUALSCREEN 76 The coordinates for the left side of the virtual screen. The virtual screen is the bounding rectangle of all display monitors. The SM_CXVIRTUALSCREEN metric is the width of the virtual screen. SM_YVIRTUALSCREEN 77 The coordinates for the top of the virtual screen. The virtual screen is the bounding rectangle of all display monitors. The SM_CYVIRTUALSCREEN metric is the height of the virtual screen. SM_CXVIRTUALSCREEN 78 The width of the virtual screen, in pixels. The virtual screen is the bounding rectangle of all display monitors. The SM_XVIRTUALSCREEN metric is the coordinates for the left side of the virtual screen. SM_CYVIRTUALSCREEN 79 The height of the virtual screen, in pixels. The virtual screen is the bounding rectangle of all display monitors. The SM_YVIRTUALSCREEN metric is the coordinates for the top of the virtual screen.

[xzh1995]

引用 7 楼 Allen_zhang 的回复:

http://msdn.microsoft.com/en-us/library/windows/desktop/ms724385(v=vs.85).aspx 自己看看msdn的解释 SM_XVIRTUALSCREEN 76 The coordinates for the left side of the virtual screen. The virtual screen is the bounding rectangle of all display monitors. The SM_CXVIRTUALSCREEN metric is the width of the virtual screen. SM_YVIRTUALSCREEN 77 The coordinates for the top of the virtual screen. The virtual screen is the bounding rectangle of all display monitors. The SM_CYVIRTUALSCREEN metric is the height of the virtual screen. SM_CXVIRTUALSCREEN 78 The width of the virtual screen, in pixels. The virtual screen is the bounding rectangle of all display monitors. The SM_XVIRTUALSCREEN metric is the coordinates for the left side of the virtual screen. SM_CYVIRTUALSCREEN 79 The height of the virtual screen, in pixels. The virtual screen is the bounding rectangle of all display monitors. The SM_YVIRTUALSCREEN metric is the coordinates for the top of the virtual screen.

上面不是说了么 看不明白

[wwwspider001]

VIRTUAL 虚拟的 因为屏幕可以调节分辨率，物理的像素点和屏幕显示的像素点并不一定一致 得到的这些数值是和分辨率相关的，不是屏幕的物理参数，故称其为虚拟的，有别于真实的硬件像素坐标 CX，CY相对于X,Y，表示在X或Y上面的距离/线段，不知道有没有对应的单词 CX，CY就像高等数学里面用的dx，dy