[v8i sdk]如何遍历文件所有model看是否有3d的model存在

To iterate models in a design file, you can use mdlDgnFileObj_traverseModelIndex function.

With regards,

  Jan

Is there any example that use this function. I can't find information from the help docs.

I am not aware of any example using this function, but a proper code can be derived from other functions using callbacks ... they are more of them in MDL API and it's quite standard approach in C programming.

The code should be something like

// Callback function
int traverseModelIndexCallback
(
    int*          pMayContinue , 
    MSWChar*      modelName , 
    MSWChar*      modelDesciption , 
    int           modelType , 
    BoolInt       is3D , 
    BoolInt       isLocked , 
    ModelID       modelID , 
    BoolInt       isDefault , 
    BoolInt       isHidden , 
    DgnFileObjP   dgnFileObj , 
    void*         pUserData  
)
{
    // Do whatever need here
    *pMayContinue = TRUE;
    return SUCCESS;
}

{
    // in code
    mdlDgnFileObj_traverseModelIndex (traverseModelIndexCallback, NULL, mdlModelRef_getDgnFile(ACTIVEMODEL));
}

pCallbackArg parameter is often used to pass pointer to e.g. own structure (e.g. array, list or smilar), so inside callback function it's possible to access this structure (through pUserData) and no global (bad dirty) variable(s) is needed.

With regards,

  Jan

Thanks. I also find the doc in MDL function reference.

Thanks. I also find the doc in MDL function reference.