www.pudn.com > MultiMonitor.rar > Win7下复制模式.txt, change:2011-07-06,size:2057b


SetCloneView 
{ 
    // Determine the size of the path array that is required to hold all valid paths. 
  Call GetDisplayConfigBufferSizes(QDC_ALL_PATHS) to retrieve the sizes of 
  the DISPLAYCONFIG_PATH_INFO and DISPLAYCONFIG_MODE_INFO buffers that are required. 
 
    // Allocate memory for path and mode information arrays. 
    Allocate PathArraySize*sizeof(DISPLAYCONFIG_PATH_INFO) for the path information array 
    Allocate ModeArraySize*sizeof(DISPLAYCONFIG_MODE_INFO) for the mode information array. 
 
    // Request all of the path information. 
  Call QueryDisplayConfig(QDC_ALL_PATHS) to obtain the path and mode information for all posible paths. 
 
    // Find and store the primary path. 
    Search the DISPLAYCONFIG_PATH_INFO array for an active path that is located at desktop position (0, 0). 
 
    // Determine the user friendly name of the current primary. 
  Call DisplayConfigGetDeviceInfo() by using the 
    DISPLAYCONFIG_DEVICE_INFO_GET_TARGET_NAME type and the adapter ID and target ID 
  from the DISPLAYCONFIG_PATH_TARGET_INFO of the primary path. 
 
    // DisplayConfigGetDeviceInfo can determine the user friendly names  
    // for all of the paths that might be part of the clone.  
    // Allow the user to pick which monitor the clone is enabled on. 
    // Only provide the user options of the paths from the current primary  
    // to targets with monitors that are connected or that are forceable.   
    Store a pointer to the DISPLAYCONFIG_PATH_INFO that the user picked. 
 
    // Mark the new path as active. 
    Set the DISPLAYCONFIG_PATH_ACTIVE in the DISPLAYCONFIG_PATH_INFO.flags of the new clone path. 
  NewClonePath->flags |= DISPLAYCONFIG_PATH_ACTIVE; 
  NewClonePath->sourceInfo.modeInfoIdx = DISPLAYCONFIG_PATH_MODE_IDX_INVALID; 
  NewClonePath->targetInfo.modeInfoIdx = DISPLAYCONFIG_PATH_MODE_IDX_INVALID; 
 
    // Set the new topology. 
  Call SetDisplayConfig 
    (SDC_APPLY | SDC_SAVE_TO_DATABASE | SDC_ALLOW_CHANGES | SDC_USE_SUPPLIED_DISPLAY_CONFIG) 
  to change to the clone topology. 
}