1.Dll引用路径

(1)exe运行程序所在的目录

(2)System32目录

(3)环境变量目录

(4)自定义路径,如:DllImport(@"C:\OJ\Bin\Judge.dll")

2..DllImport用法

[DllImport("User32.dll")]
private static extern IntPtr GetWindowDC(IntPtr hwnd);  //找到User32.dll后直接调用其中的GetWindowDC()方法

[DllImport("User32.dll")]
private static extern int ReleaseDC(IntPtr hwnd, IntPtr hdc);

[DllImport("Kernel32.dll")]
private static extern int GetLastError();

05-11 03:19