I've been trying for a couple of hours to interrogate tooltips to give up the text they contain to no avail. I've found How to get tooltip text for a given HWND? and tried that without success.
This shouldn't be that hard. I'm just not sure what I'm doing wrong. Here's a section of my code:
BOOL CALLBACK EnumWindowsProc(
_In_ HWND hwnd,
_In_ LPARAM lParam
)
{
TCHAR className[200];
GetClassName(hwnd, className, _countof(className));
ASSERT(IsWindow(hwnd));
if (_tcscmp(className, _T("tooltips_class32")) == 0)
{
TOOLINFO ti = { 0 };
ti.cbSize = sizeof(TOOLINFO);
TCHAR text[500] = { 0 };
ti.lpszText = text;
ti.hwnd = GetParent(hwnd);
IsWindow(ti.hwnd);
ti.uId = GetDlgCtrlID(hwnd);
int result = SendMessage(hwnd, TTM_GETTEXT, _countof(text), (LPARAM)&ti);
CString info;
info.Format(_T("%p: %s \"%s\"\r\n"), hwnd, className, ti.lpszText);
CString& output = *(CString*)lParam;
output += info;
}
return 1;
}
void CTooltipVerifyDlg::OnTimer(UINT_PTR nIDEvent)
{
m_output = "";
VERIFY(EnumWindows(EnumWindowsProc, (LPARAM)&m_output));
SYSTEMTIME systemTime;
GetLocalTime(&systemTime);
CString text;
text.Format(_T("%02u:%02u:%02u.%03u\r\n"), systemTime.wHour, systemTime.wMinute, systemTime.wSecond, systemTime.wMilliseconds);
m_output = text + m_output;
this->UpdateData(FALSE);
CDialogEx::OnTimer(nIDEvent);
}
CTooltipVerifyDlg is a dialogue with a text box which I communicate to with m_output, a CString that is bound to the text box.
When the SendMessage call is done, something on my desktop (or even the desktop manager) crashes. Any ideas why it would be crashing and not giving me the text that I desire?
Related
Problem:
If the user holds the "enter" keyboard button and opens OPENFILENAME Save As Dialog, it will automatically save the file - dialog only blinks.
Desired result:
The user holds the "enter" keyboard button, opens OPENFILENAME Save As Dialog, nothing happens. He needs to click on the Save button or click again the "enter" keyboard button to save a file.
My current code:
OPENFILENAME ofn;
TCHAR szFile[260] = { 't','e','s','t'}; // example filename
// Initialize OPENFILENAME
ZeroMemory(&ofn, sizeof(ofn));
ofn.lStructSize = sizeof(ofn);
ofn.hwndOwner = hWnd;
ofn.lpstrFile = szFile;
ofn.nMaxFile = sizeof(szFile);
//Files like: (ALL - *.*), (Text - .TXT)
ofn.lpstrFilter = _T("All\0*.*\0Text\0*.TXT\0");
ofn.nFilterIndex = 1;
ofn.lpstrFileTitle = NULL;
ofn.nMaxFileTitle = 0;
ofn.lpstrInitialDir = NULL;
ofn.Flags = OFN_PATHMUSTEXIST | OFN_FILEMUSTEXIST;
if (GetSaveFileName(&ofn) == TRUE)
{
// file saved
}
Possible solution:
When ofn.lpstrFile is empty do nothing; Can't save file when there
is no filename
When ofn.lpstrFile has suggested filename then turn off focus on "Save" button or somehow ignore button enter holding.
I was trying to do that but failed, I am a beginner in CPP :(
Thanks for help
The easy solution to prevent data loss is to add the OFN_OVERWRITEPROMPT flag. This does not prevent the issue from happening if the suggested name does not already exist as a file.
To actually interact with the dialog you need OFN_ENABLEHOOK and a hook function. When you receive WM_NOTIFY, you can handle CDN_FILEOK to block the suggested name if not enough time has passed or maybe it is possible to change the focus in CDN_INITDONE.
Either way, you have to be mindful of the fact that you are changing how a common dialog works and this might anger some users.
Here is one way to do it. The actual delay to return the dialog to normal is something you have to decide for yourself.
const int btnid = 1337;
void CALLBACK resetsavedlgdefpush(HWND hWnd, UINT Msg, UINT_PTR idEvent, DWORD Time)
{
KillTimer(hWnd, idEvent);
HWND hDlg = GetParent(hWnd);
UINT id = LOWORD(SendMessage(hDlg, DM_GETDEFID, 0, 0));
if (id == btnid)
{
SendMessage(hDlg, DM_SETDEFID, IDOK, 0);
}
}
UINT_PTR CALLBACK mysavehook(HWND hWndInner, UINT Msg, WPARAM wParam, LPARAM lParam)
{
if (Msg == WM_NOTIFY)
{
OFNOTIFY*pOFN = (OFNOTIFY*) lParam;
if (pOFN->hdr.code == CDN_INITDONE)
{
HWND hDlg = GetParent(hWndInner);
CreateWindowEx(0, TEXT("BUTTON"), 0, BS_DEFPUSHBUTTON|BS_TEXT|WS_CHILD|WS_VISIBLE, 0, 0, 0, 0, hWndInner, (HMENU) btnid, 0, 0);
SendMessage(hDlg, DM_SETDEFID, btnid, 0);
PostMessage(hDlg, DM_SETDEFID, btnid, 0);
int keydelay = 0;
SystemParametersInfo(SPI_GETKEYBOARDDELAY, 0, &keydelay, 0);
SetTimer(hWndInner, 0, (250 * ++keydelay) * 5, resetsavedlgdefpush);
}
}
return 0;
}
...
ofn.Flags = OFN_PATHMUSTEXIST|OFN_EXPLORER|OFN_OVERWRITEPROMPT|OFN_ENABLESIZING|OFN_ENABLEHOOK;
ofn.lpfnHook = mysavehook;
MessageBox(ofn.hwndOwner, TEXT("Hold enter to test..."), 0, 0);
if (GetSaveFileName(&ofn) == TRUE) ...
I am trying to obtain handle to SHELLDLL_DefView.
So, I have this code.
HWND hProgman = FindWindow(L"Progman", NULL);
HWND hWnd = FindWindowEx(hProgman, 0, L"SHELLDLL_DefView", NULL);
Eveyrtihing works OK, until I change in Windows desktop brackground to slideshow. Then when I search with spy++ hierarchy of the windows, than SHELLDLL_DefView has another parent. Now it is #32769 (Desktop) -> WorkerW -> SHELLDLL_DefView. So I can't find it. Problem is that when I try
HWND desktop = GetDesktopWindow();
HWND hWnd = FindWindowEx(desktop , 0, L"WorkerW", NULL);
HWND hWnd = FindWindowEx(hWnd, 0, L"SHELLDLL_DefView", NULL);
Than SHELLDLL_DefView is not found. WorkerW yes.
Can anybody help?
Your code only works on some Windows versions as "SHELLDLL_DefView" can be found under "WorkerW" or "Progman" and as you discovered there can be many windows under the "WorkerW" class (normal in Win7).
Microsoft Docs report EnumWindows() is more reliable than calling GetWindow()/FindWindowEx() functions in loops, so more universal code (tested on Windows 98/Windows 7) would look like this (say you want to refresh the desktop):
BOOL CALLBACK EnumWindowsProc(HWND hwnd, LPARAM lParam) {
HWND hNextWin;
hNextWin = FindWindowExA(hwnd, 0, "SHELLDLL_DefView", 0);
if ( hNextWin ) {
// The correct desktop shell window under Progman/WorkerW will have only 1 child window!
if ( GetNextWindow(hNextWin, GW_HWNDNEXT) || GetNextWindow(hNextWin, GW_HWNDPREV) )
return true;
// We found correct handle
PostMessageA(hNextWin, WM_KEYDOWN, VK_F5, 0);
return false;
}
return true;
}
void main() {
EnumWindows(&EnumWindowsProc, 0);
}
I found the answer. Need to iterate through all WorkerW.
HWND destop = GetDesktopWindow();
HWND hWorkerW = NULL;
HWND hShellViewWin = NULL;
do
{
hWorkerW = FindWindowEx(destop, hWorkerW, L"WorkerW", NULL);
hShellViewWin = FindWindowEx(hWorkerW, 0, L"SHELLDLL_DefView", 0);
} while (hShellViewWin == NULL && hWorkerW != NULL);
I am trying to print a list of running applications like alt-tab would give me. Here are what I have done so far:
1.In the beginning I tried EnumWindows, but I got hundreds of entries.
2.I found some similar questions and they led me to the blog of Raymond Chen.
http://blogs.msdn.com/b/oldnewthing/archive/2007/10/08/5351207.aspx
However it still shows more than 100 windows(window_num1 being 158 and window_num2 being 329), while alt-tab would give me only 4. What did I do wrong? Here is my code:
#include <windows.h>
#include <tchar.h>
#include <iostream>
using namespace std;
#pragma comment(lib, "user32.lib")
HWND windowHandle;
int window_num1=0;
int window_num2=0;
BOOL IsAltTabWindow(HWND hwnd)
{
if (hwnd == GetShellWindow()) //Desktop
return false;
// Start at the root owner
HWND hwndWalk = GetAncestor(hwnd, GA_ROOTOWNER);
// See if we are the last active visible popup
HWND hwndTry;
while ((hwndTry = GetLastActivePopup(hwndWalk)) != hwndTry)
{
if (IsWindowVisible(hwndTry))
break;
hwndWalk = hwndTry;
}
return hwndWalk == hwnd;
}
BOOL CALLBACK MyEnumProc(HWND hWnd, LPARAM lParam)
{
TCHAR title[500];
ZeroMemory(title, sizeof(title));
//string strTitle;
GetWindowText(hWnd, title, sizeof(title)/sizeof(title[0]));
if (IsAltTabWindow(hWnd))
{
_tprintf(_T("Value is %s\n"), title);
window_num1++;
}
window_num2++;
//strTitle += title; // Convert to std::string
if(_tcsstr(title, _T("Excel")))
{
windowHandle = hWnd;
return FALSE;
}
return TRUE;
}
void MyFunc(void) //(called by main)
{
EnumWindows(MyEnumProc, 0);
}
int main()
{
MyFunc();
cout<<endl<<window_num1<<endl<<window_num2;
return 0;
}
You failure is, that you should walk only visible windows... read the blog again.
For each visible window, walk up its owner chain until you find
the root owner. Then walk back down the visible last active popup
chain until you find a visible window. If you're back to where you're
started, then put the window in the Alt+↹Tab list.
Your code walks over every window!
Just use IsWindowVisible
BOOL CALLBACK MyEnumProc(HWND hWnd, LPARAM lParam)
{
TCHAR title[256] = {0,};
if (IsWindowVisible(hWnd) && GetWindowTextLength(hWnd) > 0)
{
window_num1++;
GetWindowText(hWnd, title, _countof(title));
_tprintf(_T("Value is %d, %s\n"), window_num1, title);
}
return TRUE;
}
I haven't been able to find a concise chunk of code that allows me to add/display tooltips to a CStatic (and CLed) control. Obviously, the standard code to do so does not apply for this type of control. Can someone post code snippets?
I hope this code will solve your problem .One important thing make NOTIFY property of CStatic =TRUE.
if( !m_ToolTip.Create(this))
{
TRACE0("Unable to create the ToolTip!");
}
else
{
CWnd* pWnd = GetDlgItem(IDC_STATIC_MASTER_PWD);
m_ToolTip.AddTool(pWnd,"Ok");
m_ToolTip.Activate(TRUE);
}
Let me know if any problem.
I don't know if this is still needed, but here's what I used to solve the problem:
just add SS_NOTIFY to dwStyle when creating the static label. (or simply set "Nofity" "True" in the properties). That worked fine for me.
When I add CStatic on Dialog based autocreated mfc application, tooltips don't show until I add RelayEvent in pretranslate dialog message
BOOL CTooltipStaticDlg::PreTranslateMessage(MSG* pMsg)
{
m_ToolTip.RelayEvent(pMsg);
return CDialog::PreTranslateMessage(pMsg);
}
I've had success with multiline tooltips using this simple class:
Create a class for ToolTips:
class ToolTip
{
public:
static HWND CreateToolTip(int toolID, HWND hDlg, UINT id);
};
Next, implement a tooltip creation function:
HWND ToolTip::CreateToolTip(int toolID, HWND hDlg, UINT id)
{
if (!toolID || !hDlg || !id)
{
return FALSE;
}
CString strTTText;
strTTText.LoadString( id );
// Get the window handle of the control to attach the TT to.
HWND hwndTool = ::GetDlgItem(hDlg, toolID);
// Create the tooltip window
HWND hwndTip = CreateWindowEx(NULL, TOOLTIPS_CLASS, NULL,
WS_POPUP |TTS_ALWAYSTIP,// | TTS_BALLOON,
CW_USEDEFAULT, CW_USEDEFAULT,
CW_USEDEFAULT, CW_USEDEFAULT,
hDlg, NULL,
AfxGetInstanceHandle() , NULL);
if (!hwndTool || !hwndTip)
{
return (HWND)NULL;
}
// Associate the tooltip with the tool.
TOOLINFO toolInfo = { 0 };
toolInfo.cbSize = sizeof(toolInfo);
toolInfo.hwnd = hDlg;
toolInfo.uFlags = TTF_IDISHWND | TTF_SUBCLASS;
toolInfo.uId = (UINT_PTR)hwndTool;
toolInfo.lpszText = (char*)(LPCTSTR)strTTText;
::SendMessage(hwndTip, TTM_ADDTOOL, 0, (LPARAM)&toolInfo);
::SendMessageA(hwndTip, TTM_SETMAXTIPWIDTH, 0, 40); // force multi-line
return hwndTip;
}
Call it somewhere in your InitDialog:
CMyDialog::InitDialog()
{
ToolTip::CreateToolTip( PickAUniqueNumber, m_hWnd, IDS_MY_RESOURCE_STRING );
}
I've had on my dialog label with assigned custom ID IDC_PATH. I needed to turn on Notify flag (SS_NOTIFY) of the label and I needed to overload CWnd method OnToolHitTest and handle tooltip hit test like this:
INT_PTR CPath::OnToolHitTest(CPoint point, TOOLINFO* pTI) const
{
INT_PTR r = CWnd::OnToolHitTest(point,pTI);
this->ClientToScreen(&point);
CRect rcLbl;
GetDlgItem(IDC_PATH)->GetWindowRect(&rcLbl);
if( rcLbl.PtInRect(point) )
{
pTI->uFlags |= TTF_IDISHWND;
pTI->uFlags &= ~TTF_NOTBUTTON;
pTI->uId = (UINT_PTR)GetDlgItem(IDC_PATH)->m_hWnd;
return IDC_PATH;
}
return r;
}
Then my dialog started to receive TTN_NEEDTEXT notification, which I handled and dynamicaly set text for tooltip.
BOOL CPath::OnTtnNeedText(UINT id, NMHDR *pNMHDR, LRESULT *pResult)
{
UNREFERENCED_PARAMETER(id);
TOOLTIPTEXT *pTTT = (TOOLTIPTEXT *)pNMHDR;
UINT_PTR nID = pNMHDR->idFrom;
BOOL bRet = FALSE;
if (pTTT->uFlags & TTF_IDISHWND)
{
// idFrom is actually the HWND of the tool
nID = ::GetDlgCtrlID((HWND)nID);
if(nID == IDC_PATH)
{
pTTT->lpszText = (LPSTR)(LPCTSTR)m_FullDestPath;
bRet = TRUE;
}
}
*pResult = 0;
return bRet;
}
In MFC, is there an Open Folder Dialog? That is, rather than choosing a filename, it chooses a folder name? Ideally, I'd like it to be the way Visual Studio does it when navigating for a "Project Location" (when creating a new project), which looks very much like a normal file dialog. But I could make do with one of the vertical tree sort of interfaces if the former doesn't exist.
This code will get you a open folder dialog (this was taken from somewhere on the web but I don't really know where).
CString szSelectedFolder = _T("");
// This is the recommended way to select a directory
// in Win95 and NT4.
BROWSEINFO bi;
memset((LPVOID)&bi, 0, sizeof(bi));
TCHAR szDisplayName[_MAX_PATH];
szDisplayName[0] = '\0';
bi.hwndOwner = GetSafeHwnd();
bi.pidlRoot = NULL;
bi.pszDisplayName = szDisplayName;
bi.lpszTitle = _T("Select a folder");
bi.ulFlags = BIF_RETURNONLYFSDIRS;
// Set the callback function
bi.lpfn = BrowseCallbackProc;
LPITEMIDLIST pIIL = ::SHBrowseForFolder(&bi);
TCHAR szReturnedDir[_MAX_PATH];
BOOL bRet = ::SHGetPathFromIDList(pIIL, (TCHAR*)&szReturnedDir);
if (bRet)
{
if (szReturnedDir != _T(""))
{
szSelectedFolder = szReturnedDir;
}
LPMALLOC pMalloc;
HRESULT HR = SHGetMalloc(&pMalloc);
pMalloc->Free(pIIL);
pMalloc->Release();
}
you'll also have to implement this callback function:
TCHAR szInitialDir[_MAX_PATH];
// Set the initial path of the folder browser
int CALLBACK BrowseCallbackProc(HWND hWnd, UINT uMsg, LPARAM lParam, LPARAM lpData)
{
// Look for BFFM_INITIALIZED
if (uMsg == BFFM_INITIALIZED)
{
SendMessage(hWnd, BFFM_SETSELECTION, TRUE, (LPARAM)szInitialDir);
}
return 0;
}