void DlgTerrainHeight::OnBnClickedButtonDeleteterrain()
{
	IScene *scene = TerrainEditorPlugin::getSingleton().getWorldEditor()->getMapManager()->getScene();

	// 检查是否已经创建
	if(!scene->hasSceneObject("Terrain_0_0"))
	{
		AfxMessageBox("地形已经不存在,删除失败。");
		return;
	}
	if(AfxMessageBox("是否真的要删除地形?" , MB_YESNOCANCEL) == IDYES)
	{
		TerrainEditorPlugin::getSingleton().deactivateTerrain();
		scene->destroySceneObject("Terrain_0_0");
	}
}