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实用环境:pb6.5\pb70\pb80\pb90
功 能:位图菜单的制作
方 法:如下
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第一步,首先要建立一个menu对象,命名为:m_bitmap。设计格式有
一个主菜单 File,下面有4个子菜单new\open\save\exit,如下:
----File-----
-new
-open
-save
-exit
第二步,找4个位图文件,放到exe所在的目录下,命名为:new.bmp\open.bmp\save.bmp\exit.bmp
第三步,编代码
主窗体w_main,窗体类型main,加入主菜单m_menu。
实例变量声明:
//Win32常量
CONSTANT Integer IMAGE_BITMAP = 0
CONSTANT Integer LR_LOADFROMFILE = 16
CONSTANT Integer SM_CXMENUCHECK = 71
CONSTANT Integer SM_CYMENUCHECK = 72
CONSTANT Integer MF_BITMAP = 4
CONSTANT Integer MF_BYPOSITION = 1024
全局外部函数引入API:
FUNCTION ulong LoadImageA(ulong hintance, string filename,uint utype,&
int x,int y,uint fload) LIBRARY "USER32.DLL"
FUNCTION boolean SetMenuItemBitmaps(ulong hmenu,uint upos,uint flags,&
ulong handle_bm1,ulong handle_bm2) LIBRARY "USER32.DLL"
FUNCTION int GetSystemMetrics( int nIndex ) LIBRARY "USER32.DLL"
FUNCTION ulong GetMenuItemID(ulong hMenu,uint uItem) LIBRARY "USER32.DLL"
FUNCTION int GetSubMenu(ulong hMenu,int pos) LIBRARY "USER32.DLL"
FUNCTION ulong GetMenu(ulong hWindow) LIBRARY "USER32.DLL"
FUNCTION boolean ModifyMenu(ulong hMnu, ulong uPosition, ulong uFlags, &
ulong uIDNewItem, long lpNewI) alias for ModifyMenuA LIBRARY "USER32.DLL"
open事件中:
long ll_MainHandle
long ll_SubMenuHandle
integer li_MenuItemID
long ll_X
long ll_Y
long ll_BitmapNew
long ll_BitmapOpen
long ll_BitmapSave
long ll_BitmapExit
//取得菜单句柄
ll_MainHandle = GetMenu(Handle(this))
//取得第一个菜单项的句柄
ll_SubMenuHandle = GetSubMenu(ll_MainHandle,0)
//装入图像数据
ll_BitmapNew = LoadImageA(0,'new.bmp',IMAGE_BITMAP,0,0,LR_LOADFROMFILE)
ll_BitmapOpen = LoadImageA(0,'open.bmp',IMAGE_BITMAP,0,0,LR_LOADFROMFILE)
//取得第一个子菜单项的ID并修改菜单
li_MenuItemID = GetMenuItemID(ll_SubMenuHandle,0)
ModifyMenu(ll_SubMenuHandle,li_MenuItemID,MF_BITMAP,li_MenuItemId,ll_BitmapNew)
//取得第二个子菜单项的ID并修改菜单
li_MenuItemID = GetMenuItemID(ll_SubMenuHandle,1)
ModifyMenu(ll_SubMenuHandle,li_MenuItemID,MF_BITMAP,li_MenuItemId,ll_BitmapOpen)
//取得菜单缺省check-mark位图的尺寸
ll_x = GetSystemMetrics(SM_CXMENUCHECK)
ll_y = GetSystemMetrics(SM_CYMENUCHECK)
//按系统尺寸装入图像
ll_BitmapSave = LoadImageA(0,'save.bmp', IMAGE_BITMAP ,ll_x,ll_y,LR_LOADFROMFILE)
ll_BitmapExit = LoadImageA(0,'exit.bmp', IMAGE_BITMAP ,ll_x,ll_y,LR_LOADFROMFILE)
//设置菜单位图
SetMenuItemBitmaps(ll_SubMenuHandle,2,MF_BYPOSITION,ll_BitmapSave,ll_BitmapSave)
SetMenuItemBitmaps(ll_SubMenuHandle,3,MF_BYPOSITION,ll_BitmapExit,ll_BitmapExit)
感兴趣的,还不快试试。
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