如何检查按钮是否被按下
我的目标是用一堆不同的子控件填充窗口的客户区。像按钮复选框和静态文本的东西,但我很难找出如何捕捉按钮单击消息。如何检查按钮是否被按下
我的代码:
#include <windows.h>
#include <CommCtrl.h>
#include "resource.h"
HMENU BUTTON1;
LRESULT CALLBACK WndProc (HWND hwnd, UINT message, UINT wParam, LONG lParam) ;
int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,
LPSTR lpszCmdParam, int nCmdShow)
{
static char szAppName[] = "Keyboarding" ;
HWND hwnd;
MSG msg;
WNDCLASS wndclass;
HMENU hMenu;
hMenu = LoadMenu(hInstance, MAKEINTRESOURCE(IDR_MENU1));
if (!hPrevInstance)
{
wndclass.style = CS_HREDRAW | CS_VREDRAW;
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 = static_cast<HBRUSH>(GetStockObject (WHITE_BRUSH));
wndclass.lpszMenuName = NULL ;
wndclass.lpszClassName = szAppName ;
RegisterClass (&wndclass) ;
}
hwnd = CreateWindow (szAppName, // window class name
"Lab 6", // window caption
WS_OVERLAPPEDWINDOW, // window style
CW_USEDEFAULT, // initial x position
CW_USEDEFAULT, // initial y position
CW_USEDEFAULT,
CW_USEDEFAULT, // hmmmmm???
NULL, // parent window handle
hMenu, // window menu handle
hInstance, // program instance handle
NULL) ; // creation parameters
HWND button1 = CreateWindow(WC_BUTTON,
"Push Button",
WS_TABSTOP|WS_VISIBLE|WS_CHILD|BS_PUSHBUTTON,
50,
50,
100,
24,
hwnd,
BUTTON1,
hInstance,
NULL);
HWND button2 = CreateWindow(WC_BUTTON,
"Auto Check Button?",
WS_TABSTOP|WS_VISIBLE|WS_CHILD|BS_PUSHBUTTON,
50,
50,
100,
24,
hwnd,
NULL,
hInstance,
NULL);
HWND button3 = CreateWindow(WC_BUTTON,
"Push Button",
WS_TABSTOP|WS_VISIBLE|WS_CHILD|BS_PUSHBUTTON,
50,
50,
100,
24,
hwnd,
NULL,
hInstance,
NULL);
HWND editControl = CreateWindow(WC_BUTTON,
"Push Button",
WS_TABSTOP|WS_VISIBLE|WS_CHILD|BS_PUSHBUTTON,
50,
50,
100,
24,
hwnd,
NULL,
hInstance,
NULL);
HWND StaticControl = CreateWindow(WC_STATIC,
"Hello World",
WS_TABSTOP|WS_VISIBLE|WS_CHILD|BS_PUSHBUTTON,
50,
100,
100,
24,
hwnd,
NULL,
hInstance,
NULL);
HWND ListBox = CreateWindow(WC_BUTTON,
"Push Button",
WS_TABSTOP|WS_VISIBLE|WS_CHILD|BS_PUSHBUTTON,
50,
50,
100,
24,
hwnd,
NULL,
hInstance,
NULL);
ShowWindow (hwnd, nCmdShow) ;
UpdateWindow (hwnd) ;
while (GetMessage (&msg, NULL, 0, 0))
{
TranslateMessage (&msg) ;
DispatchMessage (&msg) ;
}
return (int) msg.wParam ;
}
LRESULT CALLBACK WndProc (HWND hwnd, UINT message, UINT wParam,
LONG lParam)
{
HDC hdc ;
PAINTSTRUCT ps ;
TEXTMETRIC tm;
RECT rClientRect;
RECT rWindowRect;
SIZE size;
int cButtons = 0;
switch (message)
{
case WM_COMMAND:
switch(LOWORD(wParam))
{
case BUTTON1:
break;
}
case WM_PAINT:
hdc = BeginPaint (hwnd, &ps) ;
EndPaint (hwnd, &ps) ;
return 0 ;
case WM_DESTROY:
PostQuitMessage (0) ;
return 0 ;
}
return DefWindowProc (hwnd, message, wParam, lParam) ;
}
我试图抓住我的第一个按钮labaled按钮1,并具有 “ID” BUTTON1。我试图在我的WM_COMMAND中捕捉它们,并且它说我的BUTTON1是未识别的。
你所寻找的是:
case WM_COMMAND:
switch(LOWORD(wParam)) {
case BUTTON1: {
但在此之前它可以识别BUTTON1你将不得不宣布它以这样一种方式,它可以通过消息处理程序予以确认:例如使之成为全球变量,而不是在WinMain中声明它:
HMENU BUTTON1;
int WINAPI WinMaietcetc..
让我知道这是否工作!
它的工作种类。它说BUTTON1需要是一个可修改的表达。现在更新代码。 – 2013-05-13 16:01:47
您需要给BUTTON1一个值,所以'HMENU BUTTON1 = 5'。你最好使用define('#define BUTTON1 5')或'const int'而不仅仅是HMENU – 2013-05-13 16:04:18
因为它是一个开关,我认为它必须是const或定义的,以便它被允许由编译器 – 2013-05-13 16:05:18
我试图在我的WM_COMMAND中捕捉我的BUTTON1并切换wParam的LOWORD。它只是说BUTTON1没有被识别。 – 2013-05-13 15:52:27
@JesseMoreland,它在'WinMain'中。你的程序看不到它。 – chris 2013-05-13 15:53:38
我必须制定一个儿童控制程序? – 2013-05-13 15:53:52