14 Windows编程——SetWindowLong
使用默认窗口处理函数，源码
#include<Windows.h>
#include<Windowsx.h> LRESULT CALLBACK WindProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam);
LRESULT CALLBACK MyProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam); int WinMain(HINSTANCE hInst, HINSTANCE tmp, LPSTR szCmd, int nShow)
{
WNDCLASS WndClass;
TCHAR* ClassName = TEXT("MyClass");
HWND hwnd;
MSG msg;
HBRUSH hBrush = CreateSolidBrush(RGB(, , )); WndClass.cbClsExtra = ;
WndClass.cbWndExtra = ;
WndClass.hbrBackground = hBrush;
WndClass.hCursor = LoadCursor(NULL, IDC_ARROW);
WndClass.hIcon = LoadIcon(NULL, IDI_APPLICATION);
WndClass.hInstance = hInst;
WndClass.lpfnWndProc = WindProc;
WndClass.lpszClassName = ClassName;
WndClass.lpszMenuName = NULL;
WndClass.style = CS_VREDRAW | CS_HREDRAW; if (!RegisterClass(&WndClass))
{
MessageBox(NULL, TEXT("Gegister Class Fail!!"), TEXT("error"), MB_OK);
return ;
} //CreateWindow返回之前，会发送WM_CREATE消息
hwnd = CreateWindow(ClassName, TEXT("Hello"), WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT, , , NULL, NULL, hInst, NULL);
if (hwnd == NULL)
{
MessageBox(NULL, TEXT("Create Window Fail!!"), TEXT("error"), MB_OK);
return ;
}
ShowWindow(hwnd, nShow);
UpdateWindow(hwnd); while (GetMessage(&msg, NULL, , ))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
} return ;
} LRESULT CALLBACK WindProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
PAINTSTRUCT pt;
static int cx, cy;
HDC hdc;
HBRUSH hBrush = CreateSolidBrush(RGB(, , ));
switch (message)
{
case WM_CREATE:
//SetWindowLong(hwnd, GWL_WNDPROC, (LONG)MyProc);
return ;
case WM_SIZE:
cx = LOWORD(lParam);
cy = HIWORD(lParam);
return ;
case WM_PAINT:
hdc = BeginPaint(hwnd, &pt);
HBRUSH hBrush = CreateSolidBrush(RGB(,,));
SelectObject(hdc, hBrush);
Rectangle(hdc, , , cx/, cy/);
DeleteObject(hBrush);
EndPaint(hwnd, &pt);
return ;
case WM_DESTROY:
PostQuitMessage();
return ;
default:
break;
} return DefWindowProc(hwnd, message, wParam, lParam);
} LRESULT CALLBACK MyProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
PAINTSTRUCT ps;
HDC hdc;
static int cx, cy; switch (message)
{
case WM_SIZE:
cx = LOWORD(lParam);
cy = HIWORD(lParam);
return ;
case WM_PAINT:
hdc = BeginPaint(hwnd, &ps); EndPaint(hwnd, &ps);
return ;
default:
break;
}
return DefWindowProc(hwnd, message, wParam, lParam);
}
运行结果(只能使用Alt+F4关闭)：
使用SetWindowLong替换窗户口处理函数，源码
#include<Windows.h>
#include<Windowsx.h> LRESULT CALLBACK WindProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam);
LRESULT CALLBACK MyProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam); int WinMain(HINSTANCE hInst, HINSTANCE tmp, LPSTR szCmd, int nShow)
{
WNDCLASS WndClass;
TCHAR* ClassName = TEXT("MyClass");
HWND hwnd;
MSG msg;
HBRUSH hBrush = CreateSolidBrush(RGB(, , )); WndClass.cbClsExtra = ;
WndClass.cbWndExtra = ;
WndClass.hbrBackground = hBrush;
WndClass.hCursor = LoadCursor(NULL, IDC_ARROW);
WndClass.hIcon = LoadIcon(NULL, IDI_APPLICATION);
WndClass.hInstance = hInst;
WndClass.lpfnWndProc = WindProc;
WndClass.lpszClassName = ClassName;
WndClass.lpszMenuName = NULL;
WndClass.style = CS_VREDRAW | CS_HREDRAW; if (!RegisterClass(&WndClass))
{
MessageBox(NULL, TEXT("Gegister Class Fail!!"), TEXT("error"), MB_OK);
return ;
} //CreateWindow返回之前，会发送WM_CREATE消息
hwnd = CreateWindow(ClassName, TEXT("Hello"), WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT, , , NULL, NULL, hInst, NULL);
if (hwnd == NULL)
{
MessageBox(NULL, TEXT("Create Window Fail!!"), TEXT("error"), MB_OK);
return ;
}
ShowWindow(hwnd, nShow);
UpdateWindow(hwnd); while (GetMessage(&msg, NULL, , ))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
} return ;
} LRESULT CALLBACK WindProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
PAINTSTRUCT pt;
static int cx, cy;
HDC hdc;
HBRUSH hBrush = CreateSolidBrush(RGB(, , ));
switch (message)
{
case WM_CREATE:
SetWindowLong(hwnd, GWL_WNDPROC, (LONG)MyProc);
return ;
case WM_SIZE:
cx = LOWORD(lParam);
cy = HIWORD(lParam);
return ;
case WM_PAINT:
hdc = BeginPaint(hwnd, &pt);
HBRUSH hBrush = CreateSolidBrush(RGB(,,));
SelectObject(hdc, hBrush);
Rectangle(hdc, , , cx/, cy/);
DeleteObject(hBrush);
EndPaint(hwnd, &pt);
return ;
case WM_DESTROY:
PostQuitMessage();
return ;
default:
break;
} return DefWindowProc(hwnd, message, wParam, lParam);
} LRESULT CALLBACK MyProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
PAINTSTRUCT ps;
HDC hdc;
static int cx, cy; switch (message)
{
case WM_SIZE:
cx = LOWORD(lParam);
cy = HIWORD(lParam);
return ;
case WM_PAINT:
hdc = BeginPaint(hwnd, &ps);
HBRUSH hBrush = CreateSolidBrush(RGB(, , ));
SelectObject(hdc, hBrush);
Rectangle(hdc, cx / , cy / , cx, cy);
DeleteObject(hBrush);
EndPaint(hwnd, &ps);
return ;
default:
break;
}
return DefWindowProc(hwnd, message, wParam, lParam);
}
运行结果：
使用SetWindowLong接管原来窗口处理函数后，把WM_PAINT消息先在MyProc处理一次 ，然后交给原来的窗口处理函数再处理一次。但是发现并没有绘制出原来窗口处理函数绘制的图形
#include<Windows.h>
#include<Windowsx.h> LRESULT CALLBACK WindProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam);
LRESULT CALLBACK MyProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam); int WinMain(HINSTANCE hInst, HINSTANCE tmp, LPSTR szCmd, int nShow)
{
WNDCLASS WndClass;
TCHAR* ClassName = TEXT("MyClass");
HWND hwnd;
MSG msg;
HBRUSH hBrush = CreateSolidBrush(RGB(, , )); WndClass.cbClsExtra = ;
WndClass.cbWndExtra = ;
WndClass.hbrBackground = hBrush;
WndClass.hCursor = LoadCursor(NULL, IDC_ARROW);
WndClass.hIcon = LoadIcon(NULL, IDI_APPLICATION);
WndClass.hInstance = hInst;
WndClass.lpfnWndProc = WindProc;
WndClass.lpszClassName = ClassName;
WndClass.lpszMenuName = NULL;
WndClass.style = CS_VREDRAW | CS_HREDRAW; if (!RegisterClass(&WndClass))
{
MessageBox(NULL, TEXT("Gegister Class Fail!!"), TEXT("error"), MB_OK);
return ;
} //CreateWindow返回之前，会发送WM_CREATE消息
hwnd = CreateWindow(ClassName, TEXT("Hello"), WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT, , , NULL, NULL, hInst, NULL);
if (hwnd == NULL)
{
MessageBox(NULL, TEXT("Create Window Fail!!"), TEXT("error"), MB_OK);
return ;
}
ShowWindow(hwnd, nShow);
UpdateWindow(hwnd); while (GetMessage(&msg, NULL, , ))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
} return ;
} LRESULT CALLBACK WindProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
PAINTSTRUCT pt;
static int cx, cy;
HDC hdc;
HBRUSH hBrush = CreateSolidBrush(RGB(, , ));
switch (message)
{
case WM_CREATE:
SetWindowLong(hwnd, GWL_WNDPROC, (LONG)MyProc);
return ;
case WM_SIZE:
cx = LOWORD(lParam);
cy = HIWORD(lParam);
return ;
case WM_PAINT:
hdc = BeginPaint(hwnd, &pt);
HBRUSH hBrush = CreateSolidBrush(RGB(,,));
SelectObject(hdc, hBrush);
Rectangle(hdc, , , cx/, cy/);
DeleteObject(hBrush);
EndPaint(hwnd, &pt);
return ;
case WM_DESTROY:
PostQuitMessage();
return ;
default:
break;
} return DefWindowProc(hwnd, message, wParam, lParam);
} LRESULT CALLBACK MyProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
PAINTSTRUCT ps;
HDC hdc;
static int cx, cy; switch (message)
{
case WM_SIZE:
cx = LOWORD(lParam);
cy = HIWORD(lParam);
return ;
case WM_PAINT:
hdc = BeginPaint(hwnd, &ps);
HBRUSH hBrush = CreateSolidBrush(RGB(, , ));
SelectObject(hdc, hBrush);
Rectangle(hdc, cx / , cy / , cx, cy);
DeleteObject(hBrush);
EndPaint(hwnd, &ps);
//return 0;
break;
default:
break;
}
return WindProc(hwnd, message, wParam, lParam);
}
经调试，发现WindProc函数中WM_PAINT消息，cx=0,cy=0。绘制了，只不过绘制的矩形坐标时（ 0 0 0 0），修改如下
方式① 源码
#include<Windows.h>
#include<Windowsx.h> LRESULT CALLBACK WindProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam);
LRESULT CALLBACK MyProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam); int WinMain(HINSTANCE hInst, HINSTANCE tmp, LPSTR szCmd, int nShow)
{
WNDCLASS WndClass;
TCHAR* ClassName = TEXT("MyClass");
HWND hwnd;
MSG msg;
HBRUSH hBrush = CreateSolidBrush(RGB(, , )); WndClass.cbClsExtra = ;
WndClass.cbWndExtra = ;
WndClass.hbrBackground = hBrush;
WndClass.hCursor = LoadCursor(NULL, IDC_ARROW);
WndClass.hIcon = LoadIcon(NULL, IDI_APPLICATION);
WndClass.hInstance = hInst;
WndClass.lpfnWndProc = WindProc;
WndClass.lpszClassName = ClassName;
WndClass.lpszMenuName = NULL;
WndClass.style = CS_VREDRAW | CS_HREDRAW; if (!RegisterClass(&WndClass))
{
MessageBox(NULL, TEXT("Gegister Class Fail!!"), TEXT("error"), MB_OK);
return ;
} //CreateWindow返回之前，会发送WM_CREATE消息
hwnd = CreateWindow(ClassName, TEXT("Hello"), WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT, , , NULL, NULL, hInst, NULL);
if (hwnd == NULL)
{
MessageBox(NULL, TEXT("Create Window Fail!!"), TEXT("error"), MB_OK);
return ;
}
ShowWindow(hwnd, nShow);
UpdateWindow(hwnd); while (GetMessage(&msg, NULL, , ))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
} return ;
} LRESULT CALLBACK WindProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
PAINTSTRUCT pt;
static int cx, cy;
HDC hdc;
HBRUSH hBrush = CreateSolidBrush(RGB(, , ));
switch (message)
{
case WM_CREATE:
SetWindowLong(hwnd, GWL_WNDPROC, (LONG)MyProc);
return ;
case WM_SIZE:
cx = LOWORD(lParam);
cy = HIWORD(lParam);
return ;
case WM_PAINT:
InvalidateRect(hwnd, NULL, FALSE);
hdc = BeginPaint(hwnd, &pt);
HBRUSH hBrush = CreateSolidBrush(RGB(, , ));
SelectObject(hdc, hBrush);
Rectangle(hdc, , , cx / , cy / );
DeleteObject(hBrush);
EndPaint(hwnd, &pt);
return ;
case WM_DESTROY:
PostQuitMessage();
return ;
default:
break;
} return DefWindowProc(hwnd, message, wParam, lParam);
} LRESULT CALLBACK MyProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
PAINTSTRUCT ps;
HDC hdc;
static int cx, cy; switch (message)
{
case WM_SIZE:
cx = LOWORD(lParam);
cy = HIWORD(lParam);
break;
case WM_PAINT:
hdc = BeginPaint(hwnd, &ps);
HBRUSH hBrush = CreateSolidBrush(RGB(, , ));
SelectObject(hdc, hBrush);
Rectangle(hdc, cx / , cy / , cx, cy);
DeleteObject(hBrush);
EndPaint(hwnd, &ps);
break;
default:
break;
}
return WindProc(hwnd, message, wParam, lParam);
}
方式② 源码
#include<Windows.h>
#include<Windowsx.h> LRESULT CALLBACK WindProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam);
LRESULT CALLBACK MyProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam); int WinMain(HINSTANCE hInst, HINSTANCE tmp, LPSTR szCmd, int nShow)
{
WNDCLASS WndClass;
TCHAR* ClassName = TEXT("MyClass");
HWND hwnd;
MSG msg;
HBRUSH hBrush = CreateSolidBrush(RGB(, , )); WndClass.cbClsExtra = ;
WndClass.cbWndExtra = ;
WndClass.hbrBackground = hBrush;
WndClass.hCursor = LoadCursor(NULL, IDC_ARROW);
WndClass.hIcon = LoadIcon(NULL, IDI_APPLICATION);
WndClass.hInstance = hInst;
WndClass.lpfnWndProc = WindProc;
WndClass.lpszClassName = ClassName;
WndClass.lpszMenuName = NULL;
WndClass.style = CS_VREDRAW | CS_HREDRAW; if (!RegisterClass(&WndClass))
{
MessageBox(NULL, TEXT("Gegister Class Fail!!"), TEXT("error"), MB_OK);
return ;
} //CreateWindow返回之前，会发送WM_CREATE消息
hwnd = CreateWindow(ClassName, TEXT("Hello"), WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT, , , NULL, NULL, hInst, NULL);
if (hwnd == NULL)
{
MessageBox(NULL, TEXT("Create Window Fail!!"), TEXT("error"), MB_OK);
return ;
}
ShowWindow(hwnd, nShow);
UpdateWindow(hwnd); while (GetMessage(&msg, NULL, , ))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
} return ;
} LRESULT CALLBACK WindProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
PAINTSTRUCT pt;
static int cx, cy;
HDC hdc;
RECT rect;
HBRUSH hBrush = CreateSolidBrush(RGB(, , ));
switch (message)
{
case WM_CREATE:
SetWindowLong(hwnd, GWL_WNDPROC, (LONG)MyProc);
return ;
case WM_SIZE:
cx = LOWORD(lParam);
cy = HIWORD(lParam);
return ;
case WM_PAINT:
rect.left = ;
rect.bottom = cy / ;
rect.right = cx / ;
rect.top = ;
InvalidateRect(hwnd, &rect, TRUE);
hdc = BeginPaint(hwnd, &pt);
HBRUSH hBrush = CreateSolidBrush(RGB(,,));
SelectObject(hdc, hBrush);
Rectangle(hdc, , , cx/, cy/);
DeleteObject(hBrush);
EndPaint(hwnd, &pt);
return ;
case WM_DESTROY:
PostQuitMessage();
return ;
default:
break;
} return DefWindowProc(hwnd, message, wParam, lParam);
} LRESULT CALLBACK MyProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
PAINTSTRUCT ps;
HDC hdc;
static int cx, cy; switch (message)
{
case WM_SIZE:
cx = LOWORD(lParam);
cy = HIWORD(lParam);
break;
case WM_PAINT:
hdc = BeginPaint(hwnd, &ps);
HBRUSH hBrush = CreateSolidBrush(RGB(, , ));
SelectObject(hdc, hBrush);
Rectangle(hdc, cx / , cy / , cx, cy);
DeleteObject(hBrush);
EndPaint(hwnd, &ps);
break;
default:
break;
}
return WindProc(hwnd, message, wParam, lParam);
}
运行结果：
借助SetWindowLong创建白板窗口
源码
#include<Windows.h>
#include<Windowsx.h> LRESULT CALLBACK WindProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam);
LRESULT CALLBACK MyProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam); int WinMain(HINSTANCE hInst, HINSTANCE tmp, LPSTR szCmd, int nShow)
{
WNDCLASS WndClass;
TCHAR* ClassName = TEXT("MyClass");
HWND hwnd;
MSG msg;
HBRUSH hBrush = CreateSolidBrush(RGB(, , )); WndClass.cbClsExtra = ;
WndClass.cbWndExtra = ;
WndClass.hbrBackground = hBrush;
WndClass.hCursor = LoadCursor(NULL, IDC_ARROW);
WndClass.hIcon = LoadIcon(NULL, IDI_APPLICATION);
WndClass.hInstance = hInst;
WndClass.lpfnWndProc = WindProc;
WndClass.lpszClassName = ClassName;
WndClass.lpszMenuName = NULL;
WndClass.style = CS_VREDRAW | CS_HREDRAW; if (!RegisterClass(&WndClass))
{
MessageBox(NULL, TEXT("Gegister Class Fail!!"), TEXT("error"), MB_OK);
return ;
} //CreateWindow返回之前，会发送WM_CREATE消息
hwnd = CreateWindow(ClassName, TEXT("Hello"), WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT, , , NULL, NULL, hInst, NULL);
if (hwnd == NULL)
{
MessageBox(NULL, TEXT("Create Window Fail!!"), TEXT("error"), MB_OK);
return ;
}
ShowWindow(hwnd, nShow);
UpdateWindow(hwnd); while (GetMessage(&msg, NULL, , ))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
} return ;
} LRESULT CALLBACK WindProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
PAINTSTRUCT pt;
static int cx, cy;
HDC hdc;
RECT rect;
HBRUSH hBrush = CreateSolidBrush(RGB(, , ));
switch (message)
{
case WM_CREATE:
SetWindowLong(hwnd, GWL_STYLE, (LONG)WS_POPUP);
return ;
case WM_SIZE:
cx = LOWORD(lParam);
cy = HIWORD(lParam);
return ;
case WM_PAINT:
rect.left = ;
rect.bottom = cy / ;
rect.right = cx / ;
rect.top = ;
InvalidateRect(hwnd, &rect, TRUE);
hdc = BeginPaint(hwnd, &pt);
HBRUSH hBrush = CreateSolidBrush(RGB(,,));
SelectObject(hdc, hBrush);
Rectangle(hdc, , , cx/, cy/);
DeleteObject(hBrush);
EndPaint(hwnd, &pt);
return ;
case WM_DESTROY:
PostQuitMessage();
return ;
default:
break;
} return DefWindowProc(hwnd, message, wParam, lParam);
} LRESULT CALLBACK MyProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
PAINTSTRUCT ps;
HDC hdc;
static int cx, cy; switch (message)
{
case WM_SIZE:
cx = LOWORD(lParam);
cy = HIWORD(lParam);
break;
case WM_PAINT:
hdc = BeginPaint(hwnd, &ps);
HBRUSH hBrush = CreateSolidBrush(RGB(, , ));
SelectObject(hdc, hBrush);
Rectangle(hdc, cx / , cy / , cx, cy);
DeleteObject(hBrush);
EndPaint(hwnd, &ps);
break;
default:
break;
}
return WindProc(hwnd, message, wParam, lParam);
}
运行结果
14 Windows编程——SetWindowLong的更多相关文章
- 【Windows编程】系列第十一篇：多文档界面框架
前面我们所举的例子中都是单文档界面框架,也就是说这个窗口里面的客户区就是一个文档界面,可以编写程序在里面输入或者绘制文本和图形输出,但是不能有出现多个文档的情况.比如下面的UltraEdit就是一个典 ...
- windows 编程—— 宽字符集 与 Unicode
目录: 从ASCII码 到 Unicode Windows 编程中的 "字符” 定义 (如何在windows下进行通用编码) 常用的通用函数,定义 (本文为学习<Programming ...
- windows编程 进程的创建销毁和分析
Windows程序设计:进程 进程是一个具有一定独立功能的程序关于某个数据集合的一次运行活动,在Windows编程环境下,主要由两大元素组成: • 一个是操作系统用来管理进程的内核对象.操作系统使用内 ...
- MoreWindows 微软认证专家博客目录(白话算法，C++ STL，windows编程)
为了方便大家查找和学习,现将本人博客中所有博客文章列出目录. (http://blog.csdn.net/morewindows) 一． 白话经典算法 目前有17篇,分为七大排序和经典面试题 ...
- Windows编程 Windows程序的生与死（中）
<pre style=""><pre class="cpp" name="code">1 #include < ...
- Windows编程 Windows程序的生与死（上）
引子 “Windows 程序分为‘程序代码’和‘UI(User Interface)资源’两大部份,两部份最后以RC编译器(资源编译器)整合为一个完整的EXE 文件.所谓UI 资源是指功能菜单.对话框 ...
- 资源在windows编程中的应用----菜单
资源在Windows编程中的应用 资源 加速键.位图.光标.对话框.菜单.字符串.工具条 1.菜单的创建 菜单由以下组成部分: (1)窗口主菜单条 (2)下拉式菜单框 (3)菜单项热键标识 (4)菜单 ...
- 【Windows编程】系列第六篇：创建Toolbar与Statusbar
上一篇我们学习了解了如何使用Windows GDI画图,该应用程序都是光光的静态窗口,我们使用Windows应用程序,但凡稍微复杂一点的程序都会有工具栏和状态栏,工具栏主要用于一些快捷功能按钮.比如典 ...
- 【Windows编程】系列第十篇：文本插入符
大家知道,在使用微软的编程环境创建工程时会让你选择是控制台模式还是Windows应用程序.如果选择控制台的console模式,就会在运行时出现一个黑洞洞的字符模式窗口,里面就有等待输入一闪一闪的插入符 ...
随机推荐
- 小程序 支持html富文本吗
详见: https://www.jianshu.com/p/9b9b97b17393
- Use Hexo to Build My Gitee Blog
之前有自己建站托管自己的博客系统, 后来因为流量实在太少, 服务器又要每个月出钱, 然后就把她关了, 然是拥有自己的网站的心一直没有退去啊, 然后之前有接触到别人用GitHub托管静态网页的玩法, ...
- HTTP权威指南-URL与资源
URL与资源 URL是URI的子集 方案(http),主机(www.baidu.com),路径(/home/logo.png) 方案,其实有很多,HTTP.HTTPS.FTP,SMTP等等. http ...
- scau 9502 ARDF一个变量的问题
哨兵变量flag不小心没 设置成0..所以一直WA 9502 ARDF 时间限制:1000MS 内存限制:65535K 提交次数:0 通过次数:0 题型: 编程题 语言: G++;GCC Des ...
- java当中JDBC当中请给出一个DataSource的单态模式（SingleTon）HelloWorld例子
[学习笔记] 2.DataSource的单态模式(SingleTon)程序 咱们还接着上面的例子来说.1万个人要看书.千万确保要只建立一个图书馆.要是一不留神,建了两个或三个图书馆,那可就亏大发了.对 ...
- STM32之中断函数
本文做中断函数的索引,帮助我们找到中断函数名.中断函数参数以及中断服务函数他们的来源,以便我们编程. 1)如果一个工程只有一个中断,则我们可以进行两个步骤就可以了: 使能中断通道 编写中断服务函数 2 ...
- QT release版QAudioDeviceInfo获取不到音频设备，而debug版可以获取到
新添加了两个模块:QCharts和Multimedia 但自己没有重新打包更新里面的库文件什么的... 坑爹... 害我找了这么久... 解决办法: 方法一: 将Qt安装目录下的plugins文件夹中 ...
- 简单layer 快速上手
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title> ...
- c++实现双端队列
在使用c++容器的时候其底层如何实现 例如 vector 容器 :是一个内存可以二倍扩容的向量容器,使用方便但是对内存要求严格,弊端明显 list 容器 : 双向循环链表 deq ...
- Codeforces Round #588 (Div. 1) 简要题解
1. 1229A Marcin and Training Camp 大意: 给定$n$个对$(a_i,b_i)$, 要求选出一个集合, 使得不存在一个元素好于集合中其他所有元素. 若$a_i$的二进制 ...