import com.interface;
import com.interface.IDataObject;

namespace  com.interface;

class IDropTarget{
	ctor(){
		this = ..com.interface.IUnknown();
	}; 
	//POINT 结构体传值参数可展开为 x,y 两个参数（aardio 中结构体只能传址）。
	pointer DragEnter = "int(ptr pDataObj,INT grfKeyState,int x,int y, INT &pdwEffect)"; 
	pointer DragOver = "int(INT grfKeyState,int x,int y,INT &pdwEffect)"; 
	pointer DragLeave = "int()"; 
	pointer Drop = "int(ptr pDataObj,INT grfKeyState,int x,int y,INT &pdwEffect)"; 
	
	register = function(hwnd){ 
		return ::Ole32.RegisterDragDrop(hwnd[["hwnd"]]||hwnd,owner);	 
	}
	
	revoke = function(hwnd){
		return ::Ole32.RevokeDragDrop(hwnd[["hwnd"]]||hwnd);	
	} 
}

IDropTarget.IID =  "{00000122-0000-0000-C000-000000000046}";

IDropTarget.create = function(target){
	return ..com.interface(target,"IDropTarget");
}

/*****intellisense()
com.interface.IDropTarget.create() = !stdIDropTarget.
end intellisense*****/

/*****intellisense(!stdIDropTarget)
register(__/*窗口或控件对象*/) = 注册指定窗口为可接受拖放的窗口。\n成功返回 0，失败返回错误代码（可传入 lasterr 函数获取错误信息）
revoke(__/*窗口或控件对象*/) = 撤消注册的拖放窗口。
end intellisense*****/