API菜单与加速键

最新推荐文章于 2020-06-02 23:38:16 发布

kumanong

最新推荐文章于 2020-06-02 23:38:16 发布

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CC 4.0 BY-SA版权

文章标签： api null callback winapi delete application

本文链接：https://blog.youkuaiyun.com/binyanye1/article/details/6505632

#define IDM_NEW 10
#define IDM_OPEN 11
#define IDM_CLOSE 12
#define IDM_SAVE 13
#define IDM_SAVES 14
#define IDM_ADDPRINTMENU 15
#define   IDM_DELPRINTMENU 16
#define   IDM_EXIT 17
#define   IDM_CUT 18
#define    IDM_COPY 19
#define    IDM_PASTE 20
#define    IDM_DELETE 21
#define    IDM_HELP 22
#define    IDM_LINE 23
#define    IDM_RECT 24
#define   IDM_RRECT 25
#define    IDM_ELLIP 26

#include<windows.h>
#include"7-1.h"
HMENU hmenu,hprintmenu;//定义菜单句柄
LRESULT CALLBACK WndProc(HWND,UINT,WPARAM,LPARAM);

int WINAPI WinMain
(
HINSTANCE hInstance,
HINSTANCE hPrevInst,
LPSTR lpszCmdLine,
int nCmdShow
)
{
HWND hwnd;
MSG Msg;
HACCEL hAccel;
WNDCLASS wndclass;
char lpszMenuName[]="Menu";
char lpszClassName[]="菜单";
char lpszTitle[]="My_Menu_Example";
wndclass.style=0;
wndclass.lpfnWndProc=WndProc;
wndclass.cbClsExtra=0;
wndclass.cbWndExtra=0;
wndclass.hInstance=hInstance;
wndclass.hIcon=LoadIcon(NULL,IDI_APPLICATION);
wndclass.hCursor=LoadCursor(NULL,IDC_ARROW);
wndclass.hbrBackground=GetStockObject(WEITE_BRUSH);
wndclass.lpszMenuName=lpszMenuName;//加载窗口类菜单
wndclass.lpszClassName=lpszClassName;

if(!RegisterClass(&wndclass))
{
  MessageBeep(0);
  return FALSE;
}
hwnd=CreateWindow
  (
  lpszClassName,
  lpszTitle,
  WS_OVERLAPPEDWINDOW,
  CW_USEDEFAULT,
  CW_USEDEFAULT,
  CW_USEDEFAULT,
  CW_USEDEFAULT,
  NULL,
  NULL,
  hInstance,
  NULL
  );
ShowWindow(hwnd,nCmdShow);
UpdateWindow(hwnd);

//加载加速键资源
hAccel=LoadAccelerators(hInstance,lpszMenuName);

while(GetMessage(&Msg,NULL,0,0))
{
  //在消息循环中截获加速键消息
  if(!(TranslateAccelerator(hwnd,hAccel,&Msg))
  {
   TranslateMessage(&Msg);
   DispatchMessage(&Msg);
  }
}
return Msg.wParam;
}

LRESULT CALLBACK WndProc(HWND hwnd,UINT message,WPARAM wParam,LPARAM lParam)
{
switch(message)
{
  //处理菜单消息
case WM_COMMAND:
  switch(LOWORD(wParam))
  {
  case IDM_NEW:
   break;
  case IDM_OPEN:
   break;
  case IDM_SAVE:
   brak;
  case IDM_SAVES:
   break;
  case IDM_CLOSE:
   break;
   //在主菜单栏中添加“统计计算”菜单
  case IDM_ADDPRINTMENU:
   //获取主菜单句柄
   hmenu=GetMenu(hwnd);
   //动态创建菜单
   hprintmenu=CreateMenu();
   //在创建的菜单中增加菜单项
   AppendMenu(hprintmenu,MF_ENABLED,IDM_LINE,"求和");
   AppendMenu(hprintmenu,MF_ENABLED,IDM_RECT,"求差");
   AppendMenu(hprintmenu,MF_ENABLED,IDM_RECT,"方差");
   AppendMenu(hprintmenu,MF_ENABLED,IDM_ELLIP,"均方根");
   //将创建的弹出式菜单插入主菜单中
   InsertMenu(hmenu,2,MF_POPUP|MF_BYPOSITION,(UINT)hprintmenu,"统计计算(&c)");
   //相应改变菜单中有关统计计算单项的属性
   EnableMenuItem(hmenu,IDM_ADDPAINTMENU,MF_GRAYED);
   EnableMenuItem(hmenu,IDM_DELPRINTMENU,MF_ENABLED);
   DrawMenuBar(hwnd);//重新显示窗口菜单

   //从菜单中删除弹出式统计计算菜单
  case IDM_DELPRINTMENU:
   DeleteMenu(hmenu,2,MF_BYPOSITION);//删除统计计算菜单项
   //相应改变“文件”菜单中有关统计计算菜单项的属性
   EnableMenuItem(hmenu,IDM_ADDPRINTMENU,MF_ENABLED);
   EnableMenuItem(hmenu,IDM_DELPRINTMENU,MF_GRAYED);
   DrawMenuBar(hwnd);//重新显示窗口菜单
   break;
  case IDM_EXIT:
   //选择“退出”菜单项时，向应用程序发出WM_DESTROY消息
   SendMessage(hwnd,WM_DESTROY,0,0);
   break;
  case IDM_COPY:
   break;
  case IDM_PASTE:
   break;
  case IDM_DELETE:
   break;
  }
  break;
  case WM_DESTROY:
   PostQuitMessage(0);
   break;
  default:
   return DefWindowProc(hwnd,message,wParam,lParam);
}
return 0;
}