如何通过一个弹出窗口来获得用户输入啊。。。
我部分代码如下：
static void 
postDialog ( Widget parent, XtPointer client_data, XtPointer call_data )
{
    Widget dialog, rowcol_v, rowcol_h, text1, text2, ok_button,           cancel_button;

    scaleValues* scale_v = (scaleValues *) client_data;        
    if (NULL == scale_v)
        printf("invalid scaleValues in postDialog()n");
 
    dialog = XtVaCreatePopupShell ("dialog",
        xmDialogShellWidgetClass, parent,
        XmNtitle, "Dialog shell",
        XmNdeleteResponse, XmDESTROY,
        NULL);
        
    rowcol_v = XtVaCreateWidget ("rowcol_v",
        xmRowColumnWidgetClass, dialog, NULL);
    rowcol_h = XtVaCreateWidget ("rowcol_h1", 
        xmRowColumnWidgetClass, rowcol_v,
        XmNorientation, XmHORIZONTAL,
        NULL);
    XtVaCreateManagedWidget ("Width  Scale:",
        xmLabelGadgetClass, rowcol_h, NULL);
    text1 = XtVaCreateManagedWidget ("width",
        xmTextFieldWidgetClass, rowcol_h, 
        XmNmaxLength, 4,
        XmNcursorPositionVisible, False,
        NULL);
    XtManageChild (rowcol_h);  
    
   
    rowcol_h = XtVaCreateWidget ("rowcol_h2", 
        xmRowColumnWidgetClass, rowcol_v,
        XmNorientation, XmHORIZONTAL,
        NULL);
    XtVaCreateManagedWidget ("Height Scale:",
        xmLabelGadgetClass, rowcol_h, NULL);
    text2 = XtVaCreateManagedWidget ("height",
        xmTextFieldWidgetClass, rowcol_h, 
        XmNmaxLength, 4,  
        XmNcursorPositionVisible, False,
        NULL);
    XtManageChild (rowcol_h);                              

    
    rowcol_h = XtVaCreateWidget ("rowcol_h3",
        xmFormWidgetClass, rowcol_v,
        XmNfractionBase, 5,
        NULL);
    ok_button = XtVaCreateManagedWidget ("OK",
        xmPushButtonGadgetClass, rowcol_h,
        XmNtopAttachment,     XmATTACH_FORM,
        XmNbottomAttachment,  XmATTACH_FORM,
        XmNleftAttachment,    XmATTACH_POSITION,
        XmNleftPosition,      1,
        XmNrightAttachment,   XmATTACH_POSITION,
        XmNrightPosition,     2,
        XmNshowAsDefault,     True,
        XmNdefaultButtonShadowThickness, 1,
        XmNuserData,          rowcol_v,
        NULL); 
    XtAddCallback (ok_button, XmNactivateCallback, getScaleValue, scale_v);    
        
    cancel_button = XtVaCreateManagedWidget ("Cancel",
        xmPushButtonGadgetClass, rowcol_h,
        XmNtopAttachment,     XmATTACH_FORM,
        XmNbottomAttachment,  XmATTACH_FORM,
        XmNleftAttachment,    XmATTACH_POSITION,
        XmNleftPosition,      3,
        XmNrightAttachment,   XmATTACH_POSITION,
        XmNrightPosition,     4,
        XmNshowAsDefault,     False,
        XmNdefaultButtonShadowThickness, 1,
        NULL);
    XtAddCallback (cancel_button, XmNactivateCallback, closeDialog, dialog);                   
    
    XtManageChild (rowcol_h);
    
    XtManageChild (rowcol_v); 
XtPopup (dialog, XtGrabNone);                         
}


其中typedef struct {
    char* width;          /* width  scale value */
    char* height;         /* height scale value */
} scaleValues;    

代码很长但是很简单。。
如何实现getScaleValue啊？
望知道的指点迷津！先谢了

如果是模式对话框，在XtPopup之后建立一个事件循环。如果不是模式，需要把scaleValue放在全局变量里。