当我点击我的孩子窗口时,为什么我会得到WM_MOUSEACTIVATE?我让它将焦点更改为父对象,这破坏了子对象杀死焦点逻辑
我有一个自定义窗口类作为编辑器视图,由于我直接处理键盘事件,我希望在顶部有一个标准的编辑控件来输入文本。我的问题很简单:我还想在用户单击自定义窗口类时获取焦点,因此我处理当我点击我的孩子窗口时,为什么我会得到WM_MOUSEACTIVATE?我让它将焦点更改为父对象,这破坏了子对象杀死焦点逻辑,c,winapi,focus,C,Winapi,Focus,我有一个自定义窗口类作为编辑器视图,由于我直接处理键盘事件,我希望在顶部有一个标准的编辑控件来输入文本。我的问题很简单:我还想在用户单击自定义窗口类时获取焦点,因此我处理WM_MOUSEACTIVATE: case WM_MOUSEACTIVATE: SetFocus(hwnd); return MA_ACTIVATE; 但我也希望编辑控件在失去焦点时消失: case WM_COMMAND: if (HIWORD(wparam)
WM_MOUSEACTIVATE
:
case WM_MOUSEACTIVATE:
SetFocus(hwnd);
return MA_ACTIVATE;
但我也希望编辑控件在失去焦点时消失:
case WM_COMMAND:
if (HIWORD(wparam) == EN_KILLFOCUS) {
MessageBeep(-1);
ShowWindow(edit, SW_HIDE);
return 0;
}
return DefWindowProc(hwnd, msg, wparam, lparam);
除了出于某种原因,WM_MOUSEACTIVATE
处理程序在我单击(可见的)编辑控件时触发;这会导致它失去并重新获得焦点,但不是在我隐藏编辑控件之前
完整的测试程序如下;如果单击窗口客户端区域中的任何位置,将看到编辑控件。单击一次以获得焦点,然后再次单击。您应该会听到一声蜂鸣声,然后编辑控件消失。需要通用控制6
如果我将编辑控件子类化并在那里处理WM_KILLFOCUS
,也会发生这种情况。(这就是我最初拥有的。)
发生什么事了?谢谢
// 22-23 august 2014
// edited from wineditoverlaytest 22 august 2014
// scratch Windows program by pietro gagliardi 17 april 2014
// fixed typos and added toWideString() 1 may 2014
// borrows code from the scratch GTK+ program (16-17 april 2014) and from code written 31 march 2014 and 11-12 april 2014
#define _UNICODE
#define UNICODE
#define STRICT
#define _GNU_SOURCE // needed to declare asprintf()/vasprintf()
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdarg.h>
#include <windows.h>
#include <commctrl.h> // needed for InitCommonControlsEx() (thanks Xeek in irc.freenode.net/#winapi for confirming)
#include <windowsx.h>
#ifdef _MSC_VER
#error sorry! the scratch windows program relies on mingw-only functionality! (specifically: asprintf())
#endif
HMODULE hInstance;
HICON hDefaultIcon;
HCURSOR hDefaultCursor;
HFONT controlfont;
void panic(char *fmt, ...);
HWND area;
HWND edit;
LRESULT CALLBACK wndproc(HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam)
{
RECT r;
switch (msg) {
case WM_SIZE:
GetClientRect(hwnd, &r);
MoveWindow(area, r.left, r.top, r.right - r.left, r.bottom - r.top, TRUE);
return 0;
case WM_CLOSE:
PostQuitMessage(0);
return 0;
default:
return DefWindowProc(hwnd, msg, wparam, lparam);
}
panic("oops: message %ud does not return anything; bug in wndproc()", msg);
}
LRESULT CALLBACK areawndproc(HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam)
{
switch (msg) {
case WM_MOUSEACTIVATE:
SetFocus(hwnd);
return MA_ACTIVATE;
case WM_COMMAND:
if (HIWORD(wparam) == EN_KILLFOCUS) {
MessageBeep(-1);
ShowWindow(edit, SW_HIDE);
return 0;
}
return DefWindowProc(hwnd, msg, wparam, lparam);
case WM_LBUTTONUP:
MoveWindow(edit, GET_X_LPARAM(lparam), GET_Y_LPARAM(lparam), 100, 20, TRUE);
ShowWindow(edit, SW_SHOW);
return 0;
default:
return DefWindowProc(hwnd, msg, wparam, lparam);
}
panic("oops: message %ud does not return anything; bug in wndproc()", msg);
}
HWND makeMainWindow(void)
{
WNDCLASS cls;
HWND hwnd;
ZeroMemory(&cls, sizeof (WNDCLASS));
cls.lpszClassName = L"mainwin";
cls.lpfnWndProc = wndproc;
cls.hInstance = hInstance;
cls.hIcon = hDefaultIcon;
cls.hCursor = hDefaultCursor;
cls.hbrBackground = (HBRUSH) (COLOR_BTNFACE + 1);
if (RegisterClass(&cls) == 0)
panic("error registering window class");
hwnd = CreateWindowEx(0,
L"mainwin", L"Main Window",
WS_OVERLAPPEDWINDOW,
CW_USEDEFAULT, CW_USEDEFAULT,
CW_USEDEFAULT, CW_USEDEFAULT,
NULL, NULL, hInstance, NULL);
if (hwnd == NULL)
panic("opening main window failed");
return hwnd;
}
void buildUI(HWND mainwin)
{
#define CSTYLE (WS_CHILD | WS_VISIBLE)
#define CXSTYLE (0)
#define SETFONT(hwnd) SendMessage(hwnd, WM_SETFONT, (WPARAM) controlfont, (LPARAM) TRUE);
// build GUI here; use CSTYLE and CXSTYLE in CreateWindowEx() and call SETFONT() on each new widget
WNDCLASS cls;
ZeroMemory(&cls, sizeof (WNDCLASS));
cls.lpszClassName = L"area";
cls.lpfnWndProc = areawndproc;
cls.hInstance = hInstance;
cls.hIcon = hDefaultIcon;
cls.hCursor = hDefaultCursor;
cls.hbrBackground = (HBRUSH) (COLOR_GRADIENTACTIVECAPTION + 1);
if (RegisterClass(&cls) == 0)
panic("error registering area window class");
area = CreateWindowEx(0,
L"area", L"",
WS_CHILD | WS_VISIBLE,
CW_USEDEFAULT, CW_USEDEFAULT,
CW_USEDEFAULT, CW_USEDEFAULT,
mainwin, NULL, hInstance, NULL);
if (area == NULL)
panic("opening main window failed");
edit = CreateWindowEx(WS_EX_CLIENTEDGE,
L"edit", L"",
WS_CHILD | ES_AUTOHSCROLL | ES_LEFT | ES_NOHIDESEL | WS_TABSTOP,
0, 0, 0, 0,
area, NULL, hInstance, NULL);
if (edit == NULL)
panic("edit creation failed");
SETFONT(edit);
}
void firstShowWindow(HWND hwnd);
void initwin(void);
int main(int argc, char *argv[])
{
HWND mainwin;
MSG msg;
initwin();
mainwin = makeMainWindow();
buildUI(mainwin);
firstShowWindow(mainwin);
for (;;) {
BOOL gmret;
gmret = GetMessage(&msg, NULL, 0, 0);
if (gmret == -1)
panic("error getting message");
if (gmret == 0)
break;
TranslateMessage(&msg);
DispatchMessage(&msg);
}
return 0;
}
DWORD iccFlags =
// ICC_ANIMATE_CLASS | // animation control
// ICC_BAR_CLASSES | // toolbar, statusbar, trackbar, tooltip
// ICC_COOL_CLASSES | // rebar
// ICC_DATE_CLASSES | // date and time picker
// ICC_HOTKEY_CLASS | // hot key
// ICC_INTERNET_CLASSES | // IP address entry field
// ICC_LINK_CLASS | // hyperlink
// ICC_LISTVIEW_CLASSES | // list-view, header
// ICC_NATIVEFNTCTL_CLASS | // native font
// ICC_PAGESCROLLER_CLASS | // pager
// ICC_PROGRESS_CLASS | // progress bar
ICC_STANDARD_CLASSES | // "one of the intrinsic User32 control classes"
// ICC_TAB_CLASSES | // tab, tooltip
// ICC_TREEVIEW_CLASSES | // tree-view, tooltip
// ICC_UPDOWN_CLASS | // up-down
// ICC_USEREX_CLASSES | // ComboBoxEx
// ICC_WIN95_CLASSES | // some of the above
0;
void initwin(void)
{
INITCOMMONCONTROLSEX icc;
NONCLIENTMETRICS ncm;
hInstance = GetModuleHandle(NULL);
if (hInstance == NULL)
panic("error getting hInstance");
hDefaultIcon = LoadIcon(NULL, MAKEINTRESOURCE(IDI_APPLICATION));
if (hDefaultIcon == NULL)
panic("error getting default window class icon");
hDefaultCursor = LoadCursor(NULL, MAKEINTRESOURCE(IDC_ARROW));
if (hDefaultCursor == NULL)
panic("error getting default window cursor");
icc.dwSize = sizeof (INITCOMMONCONTROLSEX);
icc.dwICC = iccFlags;
if (InitCommonControlsEx(&icc) == FALSE)
panic("error initializing Common Controls");
ncm.cbSize = sizeof (NONCLIENTMETRICS);
if (SystemParametersInfo(SPI_GETNONCLIENTMETRICS,
sizeof (NONCLIENTMETRICS), &ncm, 0) == 0)
panic("error getting non-client metrics for getting control font");
controlfont = CreateFontIndirect(&ncm.lfMessageFont);
if (controlfont == NULL)
panic("error getting control font");
}
void panic(char *fmt, ...)
{
char *msg;
TCHAR *lerrmsg;
char *fullmsg;
va_list arg;
DWORD lasterr;
DWORD lerrsuccess;
lasterr = GetLastError();
va_start(arg, fmt);
if (vasprintf(&msg, fmt, arg) == -1) {
fprintf(stderr, "critical error: vasprintf() failed in panic() preparing panic message; fmt = \"%s\"\n", fmt);
abort();
}
// according to http://msdn.microsoft.com/en-us/library/windows/desktop/ms680582%28v=vs.85%29.aspx
lerrsuccess = FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
NULL, lasterr,
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
(LPTSTR) &lerrmsg, 0, NULL);
if (lerrsuccess == 0) {
fprintf(stderr, "critical error: FormatMessage() failed in panic() preparing GetLastError() string; panic message = \"%s\", last error in panic(): %ld, last error from FormatMessage(): %ld\n", msg, lasterr, GetLastError());
abort();
}
// note to self: use %ws instead of %S (thanks jon_y in irc.oftc.net/#mingw-w64)
if (asprintf(&fullmsg, "panic: %s\nlast error: %ws\n", msg, lerrmsg) == -1) {
fprintf(stderr, "critical error: asprintf() failed in panic() preparing full report; panic message = \"%s\", last error message: \"%ws\"\n", msg, lerrmsg);
abort();
}
fprintf(stderr, "%s\n", fullmsg);
va_end(arg);
exit(1);
}
void firstShowWindow(HWND hwnd)
{
// we need to get nCmdShow
int nCmdShow;
STARTUPINFO si;
nCmdShow = SW_SHOWDEFAULT;
GetStartupInfo(&si);
if ((si.dwFlags & STARTF_USESHOWWINDOW) != 0)
nCmdShow = si.wShowWindow;
ShowWindow(hwnd, nCmdShow);
if (UpdateWindow(hwnd) == 0)
panic("UpdateWindow(hwnd) failed in first show");
}
//2014年8月22-23日
//2014年8月22日编辑自WineditOverlyTest
//pietro gagliardi的scratch Windows程序2014年4月17日
//修正了打字错误,并于2014年5月1日添加了toWideString()
//借用了scratch GTK+计划(2014年4月16日至17日)以及2014年3月31日和2014年4月11日至12日编写的代码
#定义UNICODE
#定义UNICODE
#定义严格
#定义声明asprintf()/vasprintf()所需的_GNU\u SOURCE//
#包括
#包括
#包括
#包括
#包括
#包含//InitCommonControlsEx()所需的内容(感谢irc.freenode.net/#winapi中的Xeek确认)
#包括
#ifdef硕士学位
#对不起!scratch windows程序仅依赖mingw功能!(特别是:asprintf())
#恩迪夫
HMODULE hInstance;
HICON hDefaultIcon;
HCURSOR hDefaultCursor;
HFONT控制字体;
无效恐慌(字符*fmt,…);
西北地区;
HWND编辑;
LRESULT回调wndproc(HWND HWND,UINT msg,WPARAM WPARAM,LPARAM LPARAM)
{
矩形r;
开关(msg){
案例WM_大小:
GetClientRect(hwnd和r);
移动窗口(区域,右左,右上,右右-左,右下-右上,真);
返回0;
案例WM_结束:
PostQuitMessage(0);
返回0;
违约:
返回DefWindowProc(hwnd、msg、wparam、lparam);
}
惊慌失措(“oops:message%ud没有返回任何内容;wndproc()中有bug”,msg);
}
LRESULT回调区域wndproc(HWND HWND,UINT msg,WPARAM WPARAM,LPARAM LPARAM)
{
开关(msg){
案例WM_MOUSEACTIVATE:
设置焦点(hwnd);
返回MA_激活;
case WM_命令:
if(HIWORD(wparam)=EN_KILLFOCUS){
MessageBeep(-1);
ShowWindow(编辑、开关隐藏);
返回0;
}
返回DefWindowProc(hwnd、msg、wparam、lparam);
案例WM_LBUTTONUP:
MoveWindow(编辑,获取X_LPARAM(LPARAM),获取Y_LPARAM(LPARAM),100,20,TRUE);
显示窗口(编辑、软件显示);
返回0;
违约:
返回DefWindowProc(hwnd、msg、wparam、lparam);
}
惊慌失措(“oops:message%ud没有返回任何内容;wndproc()中有bug”,msg);
}
HWND MakeMain窗口(无效)
{
WNDCLASS cls;
HWND-HWND;
零内存(&cls,sizeof(WNDCLASS));
cls.lpszClassName=L“mainwin”;
cls.lpfnWndProc=wndproc;
cls.hInstance=hInstance;
cls.hIcon=hdefulticon;
cls.hCursor=hDefaultCursor;
cls.hbrBackground=(HBRUSH)(颜色面+1);
如果(寄存器类(&cls)==0)
死机(“注册窗口类时出错”);
hwnd=CreateWindowEx(0,
L“mainwin”,L“主窗口”,
WS_重叠窗口,
CW_USEDEFAULT,CW_USEDEFAULT,
CW_USEDEFAULT,CW_USEDEFAULT,
NULL,NULL,hInstance,NULL);
if(hwnd==NULL)
恐慌(“打开主窗口失败”);
返回hwnd;
}
无效构建UI(HWND mainwin)
{
#定义CSTYLE(WS|u CHILD | WS|u VISIBLE)
#定义CXSTYLE(0)
#定义SETFONT(hwnd)SendMessage(hwnd,WM_SETFONT,(WPARAM)controlfont,(LPARAM)TRUE);
//在此处构建GUI;在CreateWindowEx()中使用CSTYLE和CXSTYLE,并在每个新小部件上调用SETFONT()
WNDCLASS cls;
零内存(&cls,sizeof(WNDCLASS));
cls.lpszClassName=L“区域”;
cls.lpfnWndProc=区域wndproc;
cls.hInstance=hInstance;
cls.hIcon=hdefulticon;
cls.hCursor=hDefaultCursor;
cls.hbrBackground=(HBRUSH)(颜色渐变激活选项+1);
如果(寄存器类(&cls)==0)
死机(“注册区域窗口类错误”);
面积=CreateWindowEx(0,
L“面积”,L“面积”,
WS|u CHILD | WS|u可见,
CW_USEDEFAULT,CW_USEDEFAULT,
CW_USEDEFAULT,CW_USEDEFAULT,
mainwin,NULL,hInstance,NULL);
如果(面积==NULL)
恐慌(“打开主窗口失败”);
编辑=CreateWindowEx(WS_EX_CLIENTEDGE,
L“编辑”,L“,
W|u CHILD | ES|u AUTOHSCROLL | ES|u LEFT | ES|u NOHIDESEL | WS|u TABSTOP,
0, 0, 0, 0,
区域,空,hInstance,空);
如果(编辑==NULL)
恐慌(“编辑创建失败”);
设置字体(编辑);
}
作废第一个显示窗口(HWND HWND);
void initwin(void);
int main(int argc,char*argv[])
{
HWND mainwin;
味精;
initwin();
mainwin=makeMainWindow();
buildUI(mainwin);
firstShowWindow(mainwin);
对于(;;){
布尔·格姆雷特;
gmret=GetMessage(&msg,NULL,0,0);
如果(gmret==-1)
恐慌(“获取消息时出错”);
如果(gmret==0)
打破
翻译信息(&msg);
发送消息(&msg);
}
返回0;
}
德沃德iccFlags=
//ICC_ANIMATE_类|//动画控件
//ICC_BAR_CLASSES |//工具栏、状态栏、轨迹栏、工具提示
//ICC|u酷|u类|//钢筋
//ICC_DATE_CLASSES |//日期和时间选择器
//ICC_热键_类|//热键
//ICC_INTERNET_CLASSES |//IP地址输入字段
//国际商会链接