[LabWindows_CVI测试技术及工程应用]3.7滚动条及仪器驱动使用（学习杂记）

2020-02-23 20:44 作者:技术龙的传人 0人读过 | 我要投稿

Scroll Bar 滚动条

仪器驱动装载

Instrument——〉Load（路径为\National Instruments\CVI2017\toolslib\custctrl\scroll.fp）

滚动条控件（水平垂直）

滚动条编程

具体细节参考https://www.bilibili.com/read/cv4728312操作，这里不再啰嗦，再自己摸索graph属性的配置，相信你一定能行！！

产生并修改源码

#include "scroll.h"

#include <cvirte.h>

#include <userint.h>

#include "scrollbar.h"

static int panelHandle;

void getvalue(void);

int main (int argc, char *argv[])

{

int value;

if (InitCVIRTE (0, argv, 0) == 0)

return -1; /* out of memory */

if ((panelHandle = LoadPanel (0, "scrollbar.uir", PANEL)) < 0)

return -1;

//将绘图控件转化成滚动条

ScrollBar_ConvertFromGraph(panelHandle, PANEL_GRAPH_VERTICAL,

scrollbarCB, &panelHandle);

ScrollBar_GetAttribute(panelHandle, PANEL_GRAPH_VERTICAL, ATTR_SB_VALUE, &value);//获取滚动条当前位置

SetCtrlVal(panelHandle, PANEL_NUMERIC_VERTICAL_VAL, value);//在NUMERIC_VERTIVAL_VAL中显示滚动条的位置

GetCtrlVal(panelHandle, PANEL_NUMERIC_VERTICAL_MIN, &value);//获取滚动条最小值

ScrollBar_SetAttribute(panelHandle, PANEL_GRAPH_VERTICAL,ATTR_SB_DOC_MIN, value);

GetCtrlVal(panelHandle, PANEL_NUMERIC_VERTICAL_MAX, &value);//获取滚动条最大值

ScrollBar_SetAttribute(panelHandle, PANEL_GRAPH_VERTICAL,ATTR_SB_DOC_MAX, value);

GetCtrlVal(panelHandle, PANEL_NUMERIC_VERTICAL_HEIG, &value);//获取滚动条高度

ScrollBar_SetAttribute(panelHandle, PANEL_GRAPH_VERTICAL,ATTR_SB_HEIGHT, value);

GetCtrlVal(panelHandle, PANEL_NUMERIC_VERTICAL_WID, &value);//获取滚动条宽度

ScrollBar_SetAttribute(panelHandle, PANEL_GRAPH_VERTICAL,ATTR_SB_WIDTH, value);

GetCtrlVal(panelHandle, PANEL_COLORNUM_COLOR, &value);//获取滚动条颜色

ScrollBar_SetAttribute(panelHandle, PANEL_GRAPH_VERTICAL,ATTR_SB_COLOR, value);

GetCtrlVal(panelHandle, PANEL_TOGGLEBUTTON_MODE, &value);//获取滚动条显示方式

ScrollBar_SetAttribute(panelHandle, PANEL_GRAPH_VERTICAL,ATTR_SB_VERTICAL, value);

GetCtrlVal(panelHandle, PANEL_NUMERIC_VERTICAL_VIEW, &value);//获取滚动条每次滚动大小

ScrollBar_SetAttribute(panelHandle, PANEL_GRAPH_VERTICAL,ATTR_SB_VIEW_SIZE, value);

DisplayPanel (panelHandle);

RunUserInterface ();

DiscardPanel (panelHandle);

return 0;

}

//滚动条回调函数

int CVICALLBACK scrollbarCB (int panel, int control, int event,

void *callbackData, int eventData1, int eventData2)

{

switch (event)

{

case EVENT_SB_UP_BUTTON:

getvalue();

break;

case EVENT_SB_DOWN_BUTTON:

getvalue();

break;

case EVENT_SB_PAGE_UP:

getvalue();

break;

case EVENT_SB_PAGE_DOWN:

getvalue();

break;

case EVENT_SB_THUMB_CHANGE:

getvalue();

break;

case EVENT_SB_COMMIT:

getvalue();

break;

}

return 0;

}

//所有Numeric控件的回调函数

int CVICALLBACK adjustvalue (int panel, int control, int event,

void *callbackData, int eventData1, int eventData2)

{

int value;

switch (event)

{

case EVENT_COMMIT:

GetCtrlVal(panelHandle, control, &value);//获取控件值

switch(control) //根据控件名设置滚动条相应属性

{

case PANEL_NUMERIC_VERTICAL_MIN: //滚动条最小值