右鍵選擇Custom?Controls——〉Toolslib?Controls——〉Hot?Ring選項(xiàng)

具有鍵盤迅速定位功能，當(dāng)控件被選定或者得到焦點(diǎn)時(shí)，用戶可以通過設(shè)定匹配字符串和設(shè)定時(shí)間來快速選擇要查詢的選項(xiàng)。

跟以往重復(fù)的步驟不再啰嗦重復(fù)了......

1、產(chǎn)生用戶界面

雙擊控件后編輯相關(guān)屬性

2、產(chǎn)生并修改源代碼（僅需添加紅色部分兩行代碼搞定）

#include "hotringctrl.h"

#include <cvirte.h>

#include <userint.h>

#include "hotring.h"

static int panelHandle;

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

{

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

return -1; /* out of memory */

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

return -1;

HotRing_ConvertFromRing (panelHandle, PANEL_HOTRING);//由面板控件Ring轉(zhuǎn)化成Hot Ring控件

HotRing_SetAttribute(panelHandle, PANEL_HOTRING, ATTR_HOTRING_TIMEOUT, 5.0);//設(shè)置按鍵超時(shí)時(shí)間為5秒

HotRing_SetAttribute(panelHandle, PANEL_HOTRING, ATTR_HOTRING_MATCH_SIZE, 2);//設(shè)置鍵盤最大輸入匹配字符為2個(gè)

DisplayPanel (panelHandle);

RunUserInterface ();

DiscardPanel (panelHandle);

return 0;

}

int CVICALLBACK QuitCallback (int panel, int control, int event,

? void *callbackData, int eventData1, int eventData2)

{

switch (event)

{

case EVENT_COMMIT:

QuitUserInterface (0);

break;

}

return 0;

}