Public Const LB_FINDSTRING=&H18F
Public Const LB_SETHORIZONTALEXTENT=&H194
当然可在API浏览器的常数中找到LB_SETHORIZONTALEXTENT和LB_FINDSTRING都代表一个信息,本身由16位组成高低各有一个数值,一般用不着管它的值,抄来用就是了LB_SETHORIZONTALEXTENT 用于设置listbox水平滚动参滚动宽度
wParam = (WPARAM) cxExtent 宽度值, pixel为单位
lParam = 0; 没用,用0填LB_FINDSTRING 用于找到listbox中第一个字符
wParam = (WPARAM) indexStart 从哪儿找起
lParam = (LPARAM) (LPCTSTR) lpszFind 要找字符的地址
Public Const LB_SETHORIZONTALEXTENT=&H194
当然可在API浏览器的常数中找到LB_SETHORIZONTALEXTENT和LB_FINDSTRING都代表一个信息,本身由16位组成高低各有一个数值,一般用不着管它的值,抄来用就是了LB_SETHORIZONTALEXTENT 用于设置listbox水平滚动参滚动宽度
wParam = (WPARAM) cxExtent 宽度值, pixel为单位
lParam = 0; 没用,用0填LB_FINDSTRING 用于找到listbox中第一个字符
wParam = (WPARAM) indexStart 从哪儿找起
lParam = (LPARAM) (LPCTSTR) lpszFind 要找字符的地址
LB_SETHORIZONTALEXTENT
An application sends an LB_SETHORIZONTALEXTENT message to set the width, in pixels, by which a list box can be scrolled horizontally (the scrollable width). If the width of the list box is smaller than this value, the horizontal scroll bar horizontally scrolls items in the list box. If the width of the list box is equal to or greater than this value, the horizontal scroll bar is hidden. LB_SETHORIZONTALEXTENT
wParam = (WPARAM) cxExtent; // horizontal scroll width
lParam = 0; // not used; must be zero
Parameters
cxExtent
Value of wParam. Specifies the number of pixels by which the list box can be scrolled.
Windows 95 and Windows 98: The wParam parameter is limited to 16-bit values. Return Values
This message does not return a value. Res
To respond to the LB_SETHORIZONTALEXTENT message, the list box must have been defined with the WS_HSCROLL style. QuickInfo
Windows NT: Requires version 3.1 or later.
Windows: Requires Windows 95 or later.
Windows CE: Requires version 1.0 or later.
Header: Declared in winuser.h.LB_FINDSTRING
An application sends an LB_FINDSTRING message to find the first string in a list box that contains the specified prefix. LB_FINDSTRING
wParam = (WPARAM) indexStart; // item before start of search
lParam = (LPARAM) (LPCTSTR) lpszFind; // search string address
Parameters
indexStart
Value of wParam. Specifies the zero-based index of the item before the first item to be searched. When the search reaches the bottom of the list box, it continues from the top of the list box back to the item specified by the indexStart parameter. If indexStart is –1, the entire list box is searched from the beginning.
Windows 95 and Windows 98: The wParam parameter is limited to 16-bit values. This means list boxes cannot contain more than 32,767 items. Although the number of items is restricted, the total size in bytes of the items in a list box is limited only by available memory. lpszFind
Value of lParam. Pointer to the null-terminated string that contains the prefix to search for. The search is case independent, so this string can contain any combination of uppercase and lowercase letters.
Return Values
The return value is the index of the matching item, or LB_ERR if the search was unsuccessful. Res
If you create the list box with an owner-drawn style but without the LBS_HASSTRINGS style, this message returns the index of the item with a long value (supplied as the lParam parameter of the LB_ADDSTRING or LB_INSERTSTRING message) that matches the value supplied as the lpszFind parameter. QuickInfo
Windows NT: Requires version 3.1 or later.
Windows: Requires Windows 95 or later.
Windows CE: Requires version 1.0 or later.
Header: Declared in winuser.h.
并没有指出常量的值
所以要用一些API声明工具
(假如你会C语言的话,直接察看C语言头文件,再改成VB声明,这是最好的方法)这个东西查到的API声明最多http://www.dapha.net/vb/list.asp?id=1
Allapi(学习API软件)
软件版本: 无图片
软件类型: 开发工具
运行环境: VB6.0代码
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软件大小: 3098K
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整理日期: 2002-8-18 0:13:50
作 者: http://www.dapha.net
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软件简介: 它是一套学习Api函数不可缺少的软件,内置api流览器