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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