源码如下（程序中进行了详细的注释）：
复制代码
----------------------------------------------------------------------
File : WIDGET_ListBox.c
Purpose : Example demonstrating the LISTBOX widget
----------------------------------------------------------------------
*/
#include "GUI.h"
#include "FRAMEWIN.h"
#include "LISTBOX.h"
#include
#define SPEED 1000
/*******************************************************************
*
* static variables
*
********************************************************************
*/
static const GUI_ConstString _ListBox[] = {
"English", "Deutsch", NULL
};
/*******************************************************************
*
* _ShowSeveralFunctions
*/
static void _ShowSeveralFunctions(LISTBOX_Handle hListBox) {
int NumEntries, i;
/* 增加垂直滚动条 */
GUI_DispStringAtCEOL("SCROLLBAR_CreateAttached", 5, 55);
GUI_Delay(SPEED);
SCROLLBAR_CreateAttached(hListBox, SCROLLBAR_CF_VERTICAL);
GUI_Delay(SPEED * 0.75);
/* 增加字符串 */
GUI_DispStringAtCEOL("LISTBOX_AddString", 5, 55);
GUI_Delay(SPEED);
LISTBOX_AddString(hListBox, "Fran鏰is");
GUI_Delay(SPEED / 6);
LISTBOX_AddString(hListBox, "Japanese");
GUI_Delay(SPEED / 6);
LISTBOX_AddString(hListBox, "Italiano");
GUI_Delay(SPEED / 6);
LISTBOX_AddString(hListBox, "Espa駉l");
GUI_Delay(SPEED / 6);
LISTBOX_AddString(hListBox, "Other language ...");
GUI_Delay(SPEED * 0.6);
/* 设置输入焦点 */
GUI_DispStringAtCEOL("WM_SetFocus", 5, 55);
GUI_Delay(SPEED * 0.9);
WM_SetFocus(hListBox);
GUI_Delay(SPEED * 0.7);
/* 设置字体 */
GUI_DispStringAtCEOL("LISTBOX_SetFont", 5, 55);
GUI_Delay(SPEED * 0.9);
LISTBOX_SetFont(hListBox, &GUI_Font13B_1);
GUI_Delay(SPEED * 0.7);
/* 增加选项 */
GUI_DispStringAtCEOL("LISTBOX_IncSel", 5, 55);
GUI_Delay(SPEED);
NumEntries = LISTBOX_GetNumItems(hListBox);
for (i = 0; i < NumEntries - 1; i++) {
LISTBOX_IncSel(hListBox);
GUI_Delay(SPEED / 6);
}
GUI_Delay(SPEED / 4);
/* 自动增加滚动条 */
GUI_DispStringAtCEOL("Optional automatic scrollbar", 5, 55);
GUI_Delay(SPEED);
LISTBOX_SetAutoScrollH(hListBox, 1);
LISTBOX_SetAutoScrollV(hListBox, 1);
GUI_Delay(SPEED * 0.75);
/* Set font */
/* 设置字体 */
GUI_DispStringAtCEOL("LISTBOX_SetFont", 5, 55);
GUI_Delay(SPEED);
LISTBOX_SetFont(hListBox, &GUI_Font16B_1);
GUI_Delay(SPEED * 0.75);
/* 递增选择 */
GUI_DispStringAtCEOL("LISTBOX_DecSel", 5, 55);
GUI_Delay(SPEED);
for (i = 0; i < NumEntries - 1; i++) {
LISTBOX_DecSel(hListBox);
GUI_Delay(SPEED / 6);
}
GUI_Delay(SPEED / 4);
/* 更改滚动条的属性 */
GUI_DispStringAtCEOL("Change scrollbar width", 5, 55);
GUI_Delay(SPEED * 0.7);
{
/* 得到滚动条的句柄 从而去修改滚动条的属性 */
SCROLLBAR_Handle hScrollH = WM_GetDialogItem(hListBox, GUI_ID_HSCROLL);
SCROLLBAR_Handle hScrollV = WM_GetDialogItem(hListBox, GUI_ID_VSCROLL);
SCROLLBAR_SetWidth(hScrollV, 14);
GUI_Delay(SPEED / 4);
SCROLLBAR_SetWidth(hScrollH, 14);
GUI_Delay(SPEED * 0.6);
}
/* 设置列表框的大小 */
GUI_DispStringAtCEOL("Change size of listbox", 5, 55);
GUI_Delay(SPEED * 0.75);
WM_ResizeWindow(hListBox, -15, 0);
GUI_Delay(SPEED / 4);
WM_ResizeWindow(hListBox, 0, -15);
GUI_Delay(SPEED / 4);
WM_ResizeWindow(hListBox, 15, 0);
GUI_Delay(SPEED / 4);
WM_ResizeWindow(hListBox, 0, 15);
GUI_Delay(SPEED / 2);
/* 设置相应的项目禁能 注意0是第一个项目 */
GUI_DispStringAtCEOL("LISTBOX_SetItemDisabled", 5, 55);
GUI_Delay(SPEED);
LISTBOX_SetItemDisabled(hListBox, 4, 1);
GUI_Delay(SPEED * 0.75);
/* 设置使能多个项目的选择 */
GUI_DispStringAtCEOL("LISTBOX_SetMulti", 5, 55);
GUI_Delay(SPEED);
LISTBOX_SetMulti(hListBox, 1);
GUI_Delay(SPEED * 0.75);
/* 选择项目 */
GUI_DispStringAtCEOL("LISTBOX_SetItemSel", 5, 55);
GUI_Delay(SPEED);
LISTBOX_SetItemSel(hListBox, 0, 1);
GUI_Delay(SPEED / 4);
LISTBOX_SetItemSel(hListBox, 1, 1);
GUI_Delay(SPEED / 4);
LISTBOX_SetItemSel(hListBox, 2, 1);
GUI_Delay(SPEED * 0.8);
/* 删除列表框 */
GUI_DispStringAtCEOL("LISTBOX_Delete", 5, 55);
GUI_Delay(SPEED * 1.1);
LISTBOX_Delete(hListBox);
GUI_Delay(SPEED * 0.75);
}
/*******************************************************************
*
* _DemoListBox
*/
static void _DemoListBox(void) {
LISTBOX_Handle hListBox;
/* 显示标题 */
GUI_SetBkColor(0xB00000);
GUI_SetColor(0xFFFFFF);
GUI_SetFont(&GUI_Font24_ASCII);
GUI_DispStringHCenterAt("Listbox - Sample", 160, 5);
GUI_Delay(SPEED / 2);
/* 创建列表框 */
GUI_SetFont(&GUI_Font8x16);
GUI_SetTextAlign(GUI_TA_LEFT);
GUI_DispStringAtCEOL("using", 5, 40);
GUI_DispStringAtCEOL("LISTBOX_Create", 5, 55);
GUI_Delay(SPEED * 0.9);
hListBox = LISTBOX_Create(_ListBox, 100, 80, 120, 115, WM_CF_SHOW);
GUI_Delay(SPEED * 0.75);
/* 功能演示 */
_ShowSeveralFunctions(hListBox);
/* Clear display */
GUI_Clear();
GUI_Delay(SPEED * 1.5);
}
/*******************************************************************
*
* _DemoListBoxAsChild
*/
static void _DemoListBoxAsChild(void) {
FRAMEWIN_Handle hFrame;
LISTBOX_Handle hListBox;
/* 显示标题 */
GUI_SetBkColor(0xB00000);
GUI_SetColor(0xFFFFFF);
GUI_SetFont(&GUI_Font24_ASCII);
GUI_DispStringHCenterAt("Listbox as child - Sample", 160, 5);
GUI_Delay(SPEED / 2);
/* 创建窗口框架 */
GUI_SetFont(&GUI_Font8x16);
GUI_SetTextAlign(GUI_TA_LEFT);
GUI_DispStringAtCEOL("using", 5, 40);
GUI_DispStringAtCEOL("FRAMEWIN_Create", 5, 55);
GUI_Delay(SPEED);
hFrame = FRAMEWIN_Create("List box", NULL, WM_CF_SHOW, 100, 80, 120, 140);
FRAMEWIN_SetFont(hFrame, &GUI_Font16B_ASCII);
FRAMEWIN_SetActive(hFrame, 1);
GUI_Delay(SPEED * 0.75);
/* 创建列表框 */
GUI_DispStringAtCEOL("LISTBOX_CreateAsChild", 5, 55);
GUI_Delay(SPEED);
/* 其实坐标0,0，水平和垂直的大小如果设置为0的话，那么将默认为父窗口的用户区大小 */
hListBox = LISTBOX_CreateAsChild(_ListBox, WM_GetClientWindow(hFrame), 0, 0, 0, 0, WM_CF_SHOW);
GUI_Delay(SPEED * 0.75);
_ShowSeveralFunctions(hListBox);
/* 删除框架窗口*/
GUI_DispStringAtCEOL("FRAMEWIN_Delete", 5, 55);
GUI_Delay(SPEED);
FRAMEWIN_Delete(hFrame);
GUI_Delay(SPEED * 0.75);
/* 清除显示 */
GUI_Clear();
GUI_Delay(SPEED * 1.5);
}
/*******************************************************************
*
* MainTask
*
* Demonstrates LISTBOX widget
*
********************************************************************
*/
void MainTask(void) {
GUI_Init();
WM_SetDesktopColor(0xB00000);
GUI_Exec();
while(1) {
_DemoListBox();
_DemoListBoxAsChild();
}
}
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