做一个按钮，点击后可以打开文本文件数据（.txt），用了下边这个程序，可是运行起来总是说找不到文件，哪位大侠能帮看看是什么问题阿，不胜感激，，， int CVICALLBACK openfile (int panel, int control, int event, void *callbackData, int eventData1, int eventData2) { static char file_name[MAX_PATHNAME_LEN]; double *wave ; long filesize; if (event == EVENT_COMMIT) { if (FileSelectPopup ("","*","*", "Name of File to Read", VAL_OK_BUTTON, 0, 1, 1, 0, file_name) > 0) { GetFileInfo ("file_name", &filesize); /*获取文件的大小*/ wave =malloc(filesize); FileToArray (file_name, wave, VAL_DOUBLE, filesize/sizeof(double), 1, VAL_GROUPS_TOGETHER, VAL_GROUPS_AS_COLUMNS, VAL_ASCII); DeleteGraphPlot (mainpanel, MAINPANEL_GRAPH_orig_wave, -1, VAL_IMMEDIATE_DRAW); PlotY (mainpanel, MAINPANEL_GRAPH_orig_wave, wave,filesize/sizeof(double), VAL_DOUBLE, VAL_THIN_LINE, VAL_EMPTY_SQUARE, VAL_SOLID, 1, VAL_RED); } } return 0; }