子窗口默认位置，我觉得是bug

卖萌de猫

版本号:v1.5.2
开发环境:vs2008
BUG说明: 用XWnd_CreateWindowEx创建子窗口，用默认的炫彩窗口样式，期望的是子窗口出现在父窗口中间，结果出现在右下角，只好去掉默认的居中标志。
BUG代码:
#include "xcgui.h"
#pragma comment(lib,"XCGUId.lib")
int WINAPI WinMain(
  HINSTANCE hInstance,      // handle to current instance
  HINSTANCE hPrevInstance,  // handle to previous instance
  LPSTR lpCmdLine,          // command line
  int nCmdShow              // show state
)
{
XInitXCGUI();
//HWINDOW hWindow=XWnd_CreateWindow(0,0,600,400,L"Test_Child");
HWINDOW hWindow=XWnd_CreateWindowEx(NULL,NULL,L"aaa",NULL,0,0,600,400,NULL);
if(hWindow)
{
  HWINDOW child=XWnd_CreateWindowEx(NULL,NULL,L"child",WS_CHILD,100,100,200,200,XWnd_GetHWnd(hWindow),XC_SY_DEFAULT);
  //HWINDOW child=XWnd_CreateWindowEx(NULL,NULL,L"child",WS_CHILD,100,100,200,200,XWnd_GetHWnd(hWindow),XC_SY_DEFAULT&~XC_SY_CENTER);
  XWnd_ShowWindow(hWindow,SW_SHOW);
  XWnd_ShowWindow(child,SW_SHOW);
  XRunXCGUI();
}
return 0;
}
BUG截图:
默认标志

只好改成这样