16 Windows编程——系统内置窗口子类型之edit、ComboBox、ownerbutton、listbox

edit类型的子窗口

ES_MULTILINE：多行输入文本框

窗口的消息：

WL_COMMAND：

EN_CHANGE：当edit窗口内的文本内容改变的时候，edit子窗口给父窗口发送一个WL_COMMAND消息，其通知码是EN_CHANGE。

WM_GETTEXT：

用SendMessage函数给edit窗口发送这个消息，同时，给wparam参数传递我们想要获得的字符个数，lParam传递一个内存块地址，sendMessage函数返回后，
lParam指向的内存中，将保存获得的字符。

WL_GETTEXTLENGTH：

用 SendMessage函数给edit窗口发送这个消息，将wParam和1Param都赋值为NULL，那SendMessage函数，将返回edit中的字符个数，但这个字符个数不包括NULL结尾字符。

edit空间演示源码

 #include<Windows.h>

 LRESULT CALLBACK WindProc(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;

     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 ;

     }

     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)

 {

     HDC hdc;

     static int cx, cy;

     static editHwnd, staticHwnd;

     TCHAR str[];

     int length;

     switch (message)

     {

     case WM_CREATE:

         editHwnd = CreateWindow(TEXT("edit"),NULL, WS_CHILD | WS_VISIBLE|WS_BORDER|ES_MULTILINE|ES_AUTOVSCROLL , , , , , hwnd, (HMENU), GetModuleHandle(NULL), NULL);

         staticHwnd = CreateWindow(TEXT("static"), NULL, WS_CHILD | WS_VISIBLE|WS_BORDER, , , , , hwnd, (HMENU), GetModuleHandle(NULL), NULL);

         return ;

     case WM_SIZE:

         cx = LOWORD(lParam);

         cy = HIWORD(lParam);

         MoveWindow(editHwnd, , , cx/, cy/, TRUE);

         MoveWindow(staticHwnd, cx / , cy / , cx, cy, TRUE);

         return ;

     case WM_COMMAND:

         if (HIWORD(wParam)==EN_CHANGE)

         {

             length = SendMessage(editHwnd, WM_GETTEXTLENGTH, NULL, NULL) + ;

             length = length >  ?  : length;

             SendMessage(editHwnd, WM_GETTEXT, length, (LPARAM)str) ;

             str[length] = '/0';

             SetWindowText(staticHwnd,str);

         }

         return ;

     case WM_DESTROY:

         PostQuitMessage();

         return ;

     default:

         break;

     }

     return DefWindowProc(hwnd, message, wParam, lParam);

 }

运行结果

ComboBox类型的子窗口

ComboBox子窗口的三种主要子类型：

CB_ADDSTRING：在combobox控件的list框中，增加一个字符串，wParam=NULL，lParam符串的指针。

WL_COMMAND：

CBN_SELCHANGE：当combobox中的选项发生变化时，发送这个通知码，其中LOWORD（lParam）就是这个combobox的窗口标识ID。

CB_GETCURSEL：用SendMessage函数，发送这个消息给combobox子窗口，那么这个函数将返回被选中的列表项的索引（索引是从0开始的）。wParam=lParam=NULL.

演示代码

 #include<Windows.h>

 #include<WinUser.h>

 #include<tchar.h>

 #include<stdio.h>

 LRESULT CALLBACK WindProc(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;

     WndClass.cbClsExtra = ;

     WndClass.cbWndExtra = ;

     WndClass.hbrBackground = (HBRUSH)(COLOR_WINDOW + );

     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;

     HDC hdc;

     static HWND ComboHwnd1, ComboHwnd2, ComboHwnd3,button,staticHwnd;

     TCHAR str[];

     switch (message)

     {

     case WM_CREATE:

         ComboHwnd1 = CreateWindow(TEXT("ComboBox"), NULL, WS_CHILD | WS_VISIBLE | CBS_SIMPLE|CBS_AUTOHSCROLL|WS_VSCROLL, , , , , hwnd, (HMENU), GetModuleHandle(NULL), NULL);

         ComboHwnd2 = CreateWindow(TEXT("ComboBox"), NULL, WS_CHILD | WS_VISIBLE | CBS_DROPDOWN, , , , , hwnd, (HMENU), GetModuleHandle(NULL), NULL);

         ComboHwnd3 = CreateWindow(TEXT("ComboBox"), NULL, WS_CHILD | WS_VISIBLE | CBS_DROPDOWNLIST, , , , , hwnd, (HMENU), GetModuleHandle(NULL), NULL);

         button = CreateWindow(TEXT("button"), TEXT("OK"), WS_CHILD | WS_VISIBLE , , , , , hwnd, (HMENU), GetModuleHandle(NULL), NULL);

         staticHwnd= CreateWindow(TEXT("static"), NULL, WS_CHILD | WS_VISIBLE, , , , , hwnd, (HMENU), GetModuleHandle(NULL), NULL);

         return ;

     case WM_SIZE:

         MoveWindow(ComboHwnd1, , , , , TRUE);

         MoveWindow(ComboHwnd2, , , , , TRUE);

         MoveWindow(ComboHwnd3, , , , , TRUE);

         MoveWindow(button, , , , , TRUE);

         MoveWindow(staticHwnd, , , , , TRUE);

         SendMessage(ComboHwnd1, CB_ADDSTRING, NULL, (LPARAM)TEXT("char-1"));

         SendMessage(ComboHwnd1, CB_ADDSTRING, NULL, (LPARAM)TEXT("char-2"));

         SendMessage(ComboHwnd1, CB_ADDSTRING, NULL, (LPARAM)TEXT("char-3"));

         SendMessage(ComboHwnd1, CB_ADDSTRING, NULL, (LPARAM)TEXT("char-4"));

         SendMessage(ComboHwnd1, CB_ADDSTRING, NULL, (LPARAM)TEXT("char-5"));

         SendMessage(ComboHwnd1, CB_ADDSTRING, NULL, (LPARAM)TEXT("char-6"));

         SendMessage(ComboHwnd1, CB_ADDSTRING, NULL, (LPARAM)TEXT("char-7"));

         SendMessage(ComboHwnd1, CB_ADDSTRING, NULL, (LPARAM)TEXT("char-8"));

         SendMessage(ComboHwnd1, CB_ADDSTRING, NULL, (LPARAM)TEXT("char-9"));

         return ;

     case WM_COMMAND:

         if (HIWORD(wParam) == CBN_SELCHANGE)

         {

             GetWindowText(ComboHwnd1,str,);

             SetWindowText(staticHwnd,str);

         }

         return ;

     case WM_DESTROY:

         PostQuitMessage();

         return ;

     default:

         break;

     }

     return DefWindowProc(hwnd, message, wParam, lParam);

 }

运行结果：

ownerbutton、listbox

演示代码

 #include<Windows.h>

 #include<WinUser.h>

 #include<tchar.h>

 #include<stdio.h>

 LRESULT CALLBACK WindProc(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;

     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)

 {

     static int cx, cy;

     static HWND ownerbutton,scroll,listbox;

     int index;

     TCHAR str[];

     RECT rect;

     switch (message)

     {

     case WM_CREATE:

         //创建普通button

         //ownerbutton = CreateWindow(TEXT("button"), TEXT("OK"), WS_CHILD | WS_VISIBLE, 0, 0, 0, 0, hwnd, (HMENU)1, GetModuleHandle(NULL), NULL);

         //创建ownerbutton

         ownerbutton = CreateWindow(TEXT("button"), TEXT("OK"), WS_CHILD | WS_VISIBLE|BS_OWNERDRAW, , , , , hwnd, (HMENU), GetModuleHandle(NULL), NULL);

         scroll = CreateWindow(TEXT("ScrollBar"), NULL, WS_CHILD | WS_VISIBLE|SBS_VERT , , , , , hwnd, (HMENU), GetModuleHandle(NULL), NULL);

         listbox = CreateWindow(TEXT("listbox"), NULL, WS_CHILD | WS_VISIBLE |LBS_STANDARD, , , , , hwnd, (HMENU), GetModuleHandle(NULL), NULL);

         SendMessage(listbox, LB_ADDSTRING, NULL, (LPARAM)TEXT("char-1"));

         SendMessage(listbox, LB_ADDSTRING, NULL, (LPARAM)TEXT("char-2"));

         SendMessage(listbox, LB_ADDSTRING, NULL, (LPARAM)TEXT("char-3"));

         SendMessage(listbox, LB_ADDSTRING, NULL, (LPARAM)TEXT("char-4"));

         SendMessage(listbox, LB_ADDSTRING, NULL, (LPARAM)TEXT("char-5"));

         SendMessage(listbox, LB_ADDSTRING, NULL, (LPARAM)TEXT("char-6"));

         SendMessage(listbox, LB_ADDSTRING, NULL, (LPARAM)TEXT("char-7"));

         SendMessage(listbox, LB_ADDSTRING, NULL, (LPARAM)TEXT("char-8"));

         SendMessage(listbox, LB_ADDSTRING, NULL, (LPARAM)TEXT("char-9"));

         return ;

     case WM_SIZE:

         cx = LOWORD(lParam);

         cy = HIWORD(lParam);

         MoveWindow(ownerbutton, , , , , TRUE);

         MoveWindow(scroll, cx-, , , cy, TRUE);

         MoveWindow(listbox, , , , , TRUE);

         return ;

     case WM_PAINT:

         return ;

     case WM_DRAWITEM:

         SetTextColor(((DRAWITEMSTRUCT*)lParam)->hDC, RGB(, , ));

         TextOut(((DRAWITEMSTRUCT*)lParam)->hDC,,, TEXT("确定"),);

         return ;

     case WM_CTLCOLORBTN:

         GetWindowRect(ownerbutton, &rect);

         SetBkMode((HDC)wParam,TRANSPARENT);

         SelectObject((HDC)wParam, CreateSolidBrush(RGB(, , )));

         Rectangle((HDC)wParam,,,rect.right-rect.left,rect.bottom-rect.top);

         return (LRESULT)CreateSolidBrush(RGB(, , ));

     case WM_VSCROLL:

         //处理方法参考之前滚动条处理方法

         return ;

     case WM_COMMAND:

         index = SendMessage(listbox, LB_GETCURSEL, NULL,NULL);

         SendMessage(listbox, LB_GETTEXT, index, (LPARAM)str);

         return ;

     case WM_DESTROY:

         PostQuitMessage();

         return ;

     default:

         break;

     }

     return DefWindowProc(hwnd, message, wParam, lParam);

 }

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16 Windows编程——系统内置窗口子类型之edit、ComboBox、ownerbutton、listbox

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