以图形方式拖动选择集

该函数提示用户拖动一组选定对象，如以下示例所示：acedDragGen()

int rc; 
ads_name ssname; 
ads_point return_pt; 
// Prompt the user for a general entity selection.
if (acedSSGet(NULL, NULL, NULL, NULL, ssname) == RTNORM) 
// The newly selected entities  
    rc = acedDragGen(ssname, 
        "Drag selected objects", // Prompt  
        0, // Display normal cursor (crosshairs)  
        dragsample, // Transformation function  
        return_pt); // Set to the specified location.

第四个参数指向执行实体转换的函数。有关 and 的示例，请参阅选择集的转换。dragsample()acedDragGen()