在后面加如：(&F)，那么按alt+F就能达到和点击一样的效果。

//绘图相关,画各种基本图形
void OnPaint(HWND hwnd)
{
PAINTSTRUCT ps={0};
HDC hdc=BeginPaint(hwnd,&ps);
HICON ico=LoadIcon(g_hinstance,MAKEINTRESOURCE(IDI_ICON1));
switch(g_id)
{


//SetPixel(hdc,100,100,RGB(0,0,255));//画点
case ID_drawline://画线
MoveToEx(hdc,100,100,NULL);
LineTo(hdc,100,150);
LineTo(hdc,150,150);
break;
case ID_drawellipse://画圆
Ellipse(hdc,100,100,200,200);
RoundRect(hdc,300,100,500,300,200,200);
break;
case ID_drawrect://画距形
Rectangle(hdc,100,100,200,200);
RoundRect(hdc,300,100,500,300,0,0);
break;
case ID_drawarc://画弧形
SetArcDirection(hdc,AD_CLOCKWISE);//AD_CLOCKWISE/AD_COUNTERCLOCKWISE 顺时针或逆时针
Arc(hdc,100,100,300,300,100,100,300,300);
break;
case ID_drawwithpen://使用画笔
drawwithpen(hdc);
break;
}
EndPaint(hwnd,&ps);
}
创建画笔：
HPEN CreatePen(  int fnPenStyle,// pen style
  int nWidth,// pen width
  COLORREF crColor   // pen color
  );
//把画笔设置到绘图对象，返回默认的画笔，先设置，使用完后，再设置回原来的
HGDIOBJ SelectObject(  HDC hdc,          // handle to DC
  HGDIOBJ hgdiobj   // handle to object
  );
//删除画笔对象
BOOL DeleteObject(  HGDIOBJ hObject   // handle to graphic object
);
//使用画笔流程示例代码：
HPEN pen=CreatePen(PS_DOT,1,RGB(0,255,0));
HGDIOBJ oldpen= SelectObject(hdc,pen);
//画图操作
SelectObject(hdc,oldpen);
DeleteObject(pen);
//画刷的作用,填充封闭图形的空白部分.
//创建实心画刷-单颜色
HBRUSH CreateSolidBrush(  COLORREF crColor   // brush color value
);
//创建阴影画刷-阴影线
HBRUSH CreateHatchBrush(  int fnStyle,      // hatch style
  COLORREF clrref   // foreground color
  );
//创建位图画刷，填充图片
HBRUSH CreatePatternBrush(  HBITMAP hbmp   // handle to bitmap);
其使用方法与CreatePen一样。


//获取系统GDI对象,用后不需要删除
HGDIOBJ GetStockObject(int fnObject   // stock object type
);
如:HGDIOBJ brush=GetStockObject(NULL_BRUSH);//透明画刷
day71 am over


//位图相关
光栅图形-记录图像中每一点的颜色等信息
矢量图形-高妙图像算法/绘图指令等信息
位图在窗口中成像:BitBlt(…);
缩放成像:StretchBlt(……);
void drawbitmap(HDC hdc)
{
HBITMAP bitmap=LoadBitmap(g_hinstance,MAKEINTRESOURCE(IDB_BITMAP2));
HDC memdc=CreateCompatibleDC(hdc);//内存DC
HGDIOBJ oldbmp= SelectObject(memdc,bitmap);//送位图到内存dc
//MoveToEx(memdc,100,100,NULL);
//LineTo(memdc,130,150);
BITMAP bm={0};//位图信息
GetObject(bitmap,sizeof(bm),&bm);//获取位图信息。
BitBlt(hdc,0,0,bm.bmWidth,bm.bmHeight,memdc,0,0,SRCCOPY);//在窗口中成像（显示）
StretchBlt(hdc,100,300,69,51,memdc,0,0,138,102,SRCCOPY);//缩小显示
StretchBlt(hdc,100,400,276,204,memdc,0,0,138,102,SRCCOPY);//放大显示
//NOTSRCCOPY 反色/SRCCOPY 原图颜色
SelectObject(memdc,oldbmp);//还原默认
DeleteObject(bitmap);//删除位图
DeleteObject(memdc);//删除内存dc
}
坐标系：分为设备坐标系和逻辑坐标系。
在GDI绘图中，使用的是逻辑坐标系；逻辑坐标系与设备坐标系有个转换关系，可以设置。
//设置映射模式（逻辑单位与设备单位之间的关系）
int SetMapMode(  HDC hdc,        // handle to device context
  int fnMapMode   // new mapping mode
  );
fnMapMode：
MM_TEXT （默认）1逻辑=1px(像素) ---坐标：x右为正，y下为正


MM_TWIPS  一般为打印机：1逻辑=1/1440英寸 ---x右为正。y上为正（下面4种模式也是这种）
MM_HIENGLISH
MM_LOENGLISH
MM_HIMETRIC
MM_LOMETRIC


MM_ISOTROPIC    自定义模式  1个逻辑=自定义
MM_ANISOTROPIC  自定义模式  X轴1个逻辑=自定义1，y轴1个逻辑=自定义2
//自定义模式时，设置逻辑与设备的比例，下面两个函数同时使用
BOOL SetWindowExtEx(  HDC hdc,
  int nXExtent,  //逻辑的X比例
  int nYExtent,  //逻辑的Y比例
  LPSIZE lpSize  //旧的比例
  );
BOOL SetViewportExtEx(  HDC hdc,
  int nXExtent,  //设备的X比例
  int nYExtent,  //设备的Y比例
  LPSIZE lpSize  //旧的比例
  );




//使用步骤
int oldmm=SetMapMode(hdc,MM_TWIPS);
//……绘图操作……
SetMapMode(hdc,oldmm);
//画字符串，比TextOut强大
int DrawText(  HDC hDC,          // handle to DC
  LPCTSTR lpString, // text to draw  int nCount,       // text length
  LPRECT lpRect,    // formatting dimensions
  UINT uFormat      // text-drawing options
  );
uFormat 常用选项：
DT_LEFT|DT_TOP|DT_WORDBREAK|DT_NOCLIP|DT_NOPREFIX
或DT_SINGLELINE|DT_VCENTER|DT_BOTTOM|DT_NOPREFIX|……
//TextOut 加强版，一般不用。
BOOL ExtTextOut(  HDC hdc,          // handle to DC
  int X,            // x-coordinate of reference point
  int Y,            // y-coordinate of reference point
  UINT fuOptions,   // 可为0
  CONST RECT* lprc, // 可为NULL
  LPCTSTR lpString, // 字符串
  UINT cbCount,     // 字符串长度
  CONST INT* lpDx   // 字符间距数组（汉字按两个字符算，之间间距用0代替）
  );

步骤：

新建win32 Application工程，再新建“资源脚本”文件。

建好后，插入“资源”-“菜单”-“新建”：

建好的菜单，和加速键，如图：

保存后，包含头文件 ：resource.h

//主要CPP文件代码：

// win32app.cpp : Defines the entry point for the application.
//

#include "stdafx.h"
#include "resource.h"
#include <stdio.h>
HINSTANCE g_hinstance=0;//全局句柄
HMENU menu1=0,menu2=0;
HANDLE g_houtput=0;
void OnCreate(HWND hwnd,LPARAM lparam)
{
	
}
LRESULT CALLBACK OnInitMunuPopUp(
							HWND hwnd,       // handle to window
							UINT uMsg,       // WM_INITMENUPOPUP
							WPARAM wParam,   // handle to menu (HMENU)
							LPARAM lParam    // item position and indicator
)
{
	unsigned int index=LOWORD(lParam);
	int IsWindowMenu=HIWORD(lParam);
	//char txt[200]={0};
	//sprintf(txt,"OnInitMenuPopUp:menu:%d,Index:%d,IsWindow:%d\n",wParam,index,IsWindowMenu);
	//WriteConsole(g_houtput,txt,strlen(txt),NULL,NULL);
	return 0;
}
UINT g_id=0;
bool isChecked=true;
void drawwithpen(HDC hdc)
{
	HPEN pen=CreatePen(PS_DOT,1,RGB(255,0,0));
	//HBRUSH brush=CreateSolidBrush(RGB(0,0,200));
	//HBRUSH brush=CreateHatchBrush(HS_CROSS,RGB(0,0,200));
	HGDIOBJ brush=GetStockObject(NULL_BRUSH);//透明画刷，不需要删除
	HGDIOBJ oldbrush= SelectObject(hdc,brush);
	HGDIOBJ oldpen= SelectObject(hdc,pen);
	HFONT font=CreateFont(30,0,45,0,1400,
		true,false,false,GB2312_CHARSET,
		0,0,0,0,"华文新魏");// 字体名称（在C:\Windows\Fonts 打开具体的字体再看第一行名称）
	HGDIOBJ oldfont= SelectObject(hdc,font);
	SetTextColor(hdc,RGB(255,0,0));
	SetBkColor(hdc,RGB(0,0,200));
	//SetBkMode(hdc,TRANSPARENT);//背景透明
	Ellipse(hdc,100,100,200,200);
	char a[50]="文字";
	TextOut(hdc,100,100,a,strlen(a));
	SelectObject(hdc,oldpen);
	SelectObject(hdc,oldbrush);
	SelectObject(hdc,oldfont);
	DeleteObject(pen);
	DeleteObject(font);
	//DeleteObject(brush);

}
void drawbitmap(HDC hdc)
{
	HBITMAP bitmap=LoadBitmap(g_hinstance,MAKEINTRESOURCE(IDB_BITMAP2));
	HDC memdc=CreateCompatibleDC(hdc);//内存DC
	HGDIOBJ oldbmp= SelectObject(memdc,bitmap);//送位图到内存dc
	//MoveToEx(memdc,100,100,NULL);
	//LineTo(memdc,130,150);
	BITMAP bm={0};
	GetObject(bitmap,sizeof(bm),&bm);
	BitBlt(hdc,0,0,bm.bmWidth,bm.bmHeight,memdc,0,0,SRCCOPY);//在窗口中成像（显示）
	StretchBlt(hdc,100,300,69,51,memdc,0,0,138,102,SRCCOPY);//缩小显示
	StretchBlt(hdc,100,400,276,204,memdc,0,0,138,102,SRCCOPY);//放大显示
	//NOTSRCCOPY 反色/SRCCOPY 原图颜色
	SelectObject(memdc,oldbmp);//还原默认
	DeleteObject(bitmap);//删除位图
	DeleteObject(memdc);//删除内存dc

}
void OnPaint(HWND hwnd)
{
	PAINTSTRUCT ps={0};
	HDC hdc=BeginPaint(hwnd,&ps);
	HICON ico=LoadIcon(g_hinstance,MAKEINTRESOURCE(IDI_ICON1));
	
	//int oldmm=SetMapMode(hdc,MM_TWIPS);
	switch(g_id)
	{
		
		//SetPixel(hdc,100,100,RGB(0,0,255));//画点
	case ID_drawline://画线
		MoveToEx(hdc,100,100,NULL);
		LineTo(hdc,100,150);
		LineTo(hdc,150,150);
		break;
	case ID_drawellipse://画圆
		Ellipse(hdc,100,100,200,200);
		RoundRect(hdc,300,100,500,300,200,200);
		break;
	case ID_drawrect://画距形
		Rectangle(hdc,100,100,200,200);
		RoundRect(hdc,300,100,500,300,0,0);
		break;
	case ID_drawarc://画弧形
		SetArcDirection(hdc,AD_CLOCKWISE);//AD_CLOCKWISE/AD_COUNTERCLOCKWISE 顺时针或逆时针
		Arc(hdc,100,100,300,300,100,100,300,300);
		break;
	case ID_drawwithpen://使用画笔
		drawwithpen(hdc);
		break;
	case ID_drawbitmap:
		drawbitmap(hdc);
		break;
	}
	//SetMapMode(hdc,oldmm);
	EndPaint(hwnd,&ps);
}
void On_Command(HWND hwnd,WPARAM wparam)
{
	bool IsFromMenu=(HIWORD(wparam)==0?true:false);//点击菜单:0，加速键:1
	unsigned int id=LOWORD(wparam);
	g_id=id;
	switch(id)
	{
	case IDFileOpen:
		MessageBox(hwnd,"open","info",MB_OK);
		break;
	case IDSet:
		MessageBox(hwnd,"ctrl+M","info",MB_OK);
		break;
	case ID_drawellipse:
	case ID_drawline:
	case ID_drawrect:
	case ID_drawarc:
	case ID_drawwithpen:
	case ID_drawbitmap:
		InvalidateRect(hwnd,NULL,TRUE);
		break;
	}
}
void OnSysCommand(HWND hwnd,WPARAM wparam)
{

}

void OnSetCursor(HWND hwnd,WPARAM wparam,LPARAM lparam)
{
	
	UINT hit=LOWORD(lparam);
	HCURSOR c1=NULL;
	if(hit==HTCLIENT)//光标在客户区
	{
		POINT pt={0};
		RECT rc={0};
		GetCursorPos(&pt);
		GetClientRect(hwnd,&rc);
// 		char txt[200]={0};
// 		ScreenToClient(hwnd,&pt);
// 		sprintf(txt,"%d,%d ; %d,%d,%d,%d\n",pt.x,pt.y,rc.top,rc.left,rc.right,rc.bottom);
// 		
// 		WriteConsole(g_houtput,txt,strlen(txt),NULL,NULL);
		if(pt.x>=rc.right/2)//客户区域前半部分与后半部分鼠标图标设置为不同
		{
			//c1=LoadCursor(g_hinstance,MAKEINTRESOURCE(IDC_CUR_INPUT));
			c1=LoadCursorFromFile("aero_working.ani");//从文件加载
		}
		else 
		{
			c1=LoadCursor(g_hinstance,MAKEINTRESOURCE(IDC_CUR_ARROW));
		}
		
	}
	else
	{
		c1=LoadCursor(g_hinstance,MAKEINTRESOURCE(IDC_CUR_ARROW));
		
	}
	if(c1!=NULL) SetCursor(c1);
}
//回调函数
LRESULT CALLBACK WinProc(HWND hwnd,UINT msg,WPARAM wparam,LPARAM lparam)
{
	switch(msg)
	{
	case WM_SYSCOMMAND:
		if(wparam==SC_CLOSE){
			int ret=MessageBox(NULL,"是否退出","info",MB_YESNO);
			if(ret==IDYES){
				//下面代码会自动关闭和销毁
				//PostQuitMessage(0);
			}
			else return 0;//不执行下面代码
		}
		OnSysCommand(hwnd,wparam);
		break;
		//在创建窗口之后还未显示的时候
	case WM_CREATE:
		OnCreate(hwnd,lparam);
		break;
	case WM_DESTROY:
		PostQuitMessage(0);
		break;
	case WM_COMMAND:
		On_Command(hwnd,wparam);
		break;
	case WM_INITMENUPOPUP:
		OnInitMunuPopUp(hwnd,msg,wparam,lparam);
		break;
	case WM_RBUTTONUP:
		//OnRButtonUp(hwnd,lparam);
		break;
	case WM_CONTEXTMENU:
		//OnContextMenu(hwnd,lparam);
		break;
	case WM_PAINT:
		OnPaint(hwnd);
		break;
	case WM_SETCURSOR:
		OnSetCursor(hwnd,wparam,lparam);
		return 0;
		break;
	}
	return DefWindowProc(hwnd,msg,wparam,lparam);
}
//注册窗口类
BOOL Register(LPSTR lpClassName,WNDPROC wndproc)
{
	WNDCLASSEX wce={0};
	wce.cbSize=sizeof(wce);
	wce.cbClsExtra=200;
	wce.cbWndExtra=200;
	wce.hbrBackground=CreateSolidBrush(RGB(0,0,255));
	wce.hCursor=LoadCursor(g_hinstance,MAKEINTRESOURCE(IDC_CUR_ARROW));
	wce.hIcon=NULL;
	wce.hIconSm=LoadIcon(g_hinstance,MAKEINTRESOURCE(IDI_ICON1));
	wce.hInstance=g_hinstance;
	wce.lpfnWndProc=wndproc;
	wce.lpszClassName=lpClassName;
	wce.lpszMenuName=NULL;//MAKEINTRESOURCE(IDR_MENUMAIN);
	wce.style=CS_HREDRAW|CS_VREDRAW;
	ATOM atom= RegisterClassEx(&wce);
	if(atom==0){
		MessageBox(NULL,"注册失败","info",MB_OK);
		return FALSE;
	}
	return TRUE;
}
//创建窗口
HWND CreateMain(LPSTR lpClassName,LPSTR lpWndName)
{
	HMENU menumain= LoadMenu(g_hinstance,MAKEINTRESOURCE(IDR_MENUMAIN));
	HWND hwnd=CreateWindowEx(0,lpClassName,lpWndName,WS_OVERLAPPEDWINDOW,CW_USEDEFAULT,CW_USEDEFAULT,
		CW_USEDEFAULT,CW_USEDEFAULT,NULL,menumain,g_hinstance,"hello create");
	return hwnd;
}
//创建子窗口
HWND CreateChild(HWND phwnd,LPSTR lpClassName,LPSTR lpWndName)
{
	if(Register(lpClassName,DefWindowProc)==0)
	{
		MessageBox(phwnd,"创建子窗口失败","info",MB_OK);
		return NULL;
	}
	//子窗口风格，都要 WS_CHILD|WS_VISIBLE
	HWND hwnd=CreateWindowEx(0,lpClassName,lpWndName,WS_CHILD|WS_VISIBLE|WS_OVERLAPPEDWINDOW,CW_USEDEFAULT,CW_USEDEFAULT,
		200,200,phwnd,NULL,g_hinstance,NULL);
	return hwnd;
}
//显示窗口
void Display(HWND hwnd)
{
	ShowWindow(hwnd,SW_SHOW);
	UpdateWindow(hwnd);
}
//处理消息
void MSGdeal()
{
	MSG msg={0};
	HACCEL acc= LoadAccelerators( g_hinstance,MAKEINTRESOURCE(IDR_ACCELERATOR1));
	while(GetMessage(&msg,NULL,0,0)){
		if(!TranslateAccelerator(msg.hwnd,acc,&msg))//不是加速键
		{
			TranslateMessage(&msg);//翻译消息 
			DispatchMessage(&msg);//派发给 WinProc 处理消息 
		}
		
	}
}



int APIENTRY WinMain(HINSTANCE hInstance,
                     HINSTANCE hPrevInstance,
                     LPSTR     lpCmdLine,
                     int       nCmdShow)
{
	AllocConsole();//调试程序方法
	g_houtput=GetStdHandle(STD_OUTPUT_HANDLE);
	g_hinstance=hInstance;
 	// TODO: Place code here.
	if(Register("main",WinProc)==0)
	{
		MessageBox(NULL,"注册失败","提示",MB_OK);
		return 0;
	}
	char title[30]={0};
	LoadString(g_hinstance,IDS_WND,title,sizeof(title));
	HWND hwnd= CreateMain("main",title);
	
	Display(hwnd);

	MSGdeal();
	return 0;
}

C++windows内核编程笔记day07_day08,可视化建菜单、加速键使用、绘图等,布布扣,bubuko.com

C++windows内核编程笔记day07_day08,可视化建菜单、加速键使用、绘图等