Windows: dialog doesn't show icon given by RC-file - windows

I have a weird problem with an icon in a dialog under Windows.
I define a dialog and icon in the RC-file. Below are the relevant lines:
define IDI_LOGO 102
ICON IDI_LOGO, IDC_ICON_LOGO, 440, 322, 21, 20
IDI_LOGO ICON "icon.ico"
Later I display the dialog and get a system icon displayed in the dialog instead of my own. However, if I run the following code, I get my icon displayed in the dialog:
HMODULE module = GetModuleHandle(NULL);
HICON icon = LoadIcon(module, MAKEINTRESOURCE(IDI_LOGO));
SendMessage(GetDlgItem(dlg, IDC_ICON_LOGO), STM_SETIMAGE, IMAGE_ICON, (LPARAM)icon);
I use MSVC2010 Express (please do not ask why).
What is going wrong? Why the icon is not displayed as expected? Please advise. Thanks!

I have solved this. The thing was that I did not provide the module handle when displaying the dialog itself. When I do as follows I get the icon and bitmaps displayed properly without doing anything in run-time.
INT_PTR displayMainDialog() {
HMODULE module = GetModuleHandle(NULL);
return DialogBox(module, MAKEINTRESOURCE(IDD_DIALOG1), NULL, (DLGPROC)dlgProc);
}
The first argument of DialogBox was NULL, but it must be a handle to the module. I think this way Windows knows where to fetch the icons and bitmaps for static controls in the dialog from.
Anyway, many thanks to all responded!

Related

How can I get data from dialog of window?

I am a newbie in Xlib world. In my project,I want to share my window to another via Remote desktop protocol, but they only saw content of window and didn't see anything if click on menu item of window. I used XGetImage to get data of specifies window. But If that window contain dialog ( see image here) I couldn't get data of dialog .
I use freeRDP source code, I modify in X11_shadow.c
function:
int x11_shadow_screen_grab(x11ShadowSubsystem* subsystem){
...
image = XGetImage(subsystem->display, 58720435, 0, 0, surface->width,
surface->height, AllPlanes,ZPixmap); //with 58720435 is window id of chrome
... }
In my opinion, the most important here is how can I get data of dialog in Window. I have a solution :
1. get window id of that dialog ( I am not sure the dialog has owner Window ID)
2. Use XGetImage get data of that dialog.
But It's not working.
I works on Linux environment.
Are there any solutions for my problems?
Thank you very much

windows application showing behind the taskbar on vista

I have an MFC application. In my application if I run on Windows XP it's working fine. But if I run in Windows Vista the MFC dialog hides behind the taskbar.
bool bHide=true;
CRect rectWorkArea = CRect(0,0,0,0);
CRect rectTaskBar = CRect(0,0,0,0);
CWnd* pWnd = CWnd::FindWindow("Shell_TrayWnd", "");
pWnd->ShowWindow(SW_SHOW);
if( bHide )
{ // Code to Hide the System Task Bar
SystemParametersInfo(SPI_GETWORKAREA,0,(LPVOID)&rectWorkArea,0);
if( pWnd )
{
pWnd->GetWindowRect(rectTaskBar);
// rectWorkArea.bottom -= rectTaskBar.Height();
rectWorkArea.bottom += rectTaskBar.Height();//-----to hide taskbar
SystemParametersInfo(SPI_SETWORKAREA,0,(LPVOID)&rectWorkArea,0);
// pWnd->ShowWindow(SW_SHOW);
pWnd->ShowWindow(SW_HIDE); //--to hide taskbar
}
}
I used this code but it hides the taskbar. But I want to show the application above the task bar.
You don't own the taskbar, so you are not supposed to hide it. You have the option to auto-minimize it by the way. You have another option of using secondary monitor without taskbar there.
On the primary monitor your app is given work area, you are being able to locate (judging from the code snippet provided above). It is the best to position your window within this area without interfering with the taskbar, whether it is above or beyond.
If you still feel like making it more like a competition "who is on top" with the task bar, you might want to take a look at SetWindowPos API and window Z-Order.
finally i found the solution , what we want to do is we should add the below code in our oninitdialog,
SetWindowPos(&this->wndTopMost,0,0,0,0,SWP_NOMOVE|SWP_NOSIZE);
the above line is enough to show the mfc dialog on above the taskbar . but sometimes the focus of the dialog get changed looks hanged(no response in dialog) the application.if it occurs put the below code.
SetWindowPos(&this->wndBottom,0,0,0,0,SWP_NOMOVE|SWP_NOSIZE);

Win32 custom message box

I want to make a custom message box. What I want to customize is the button's text.
MessageBoxW(
NULL,
L"Target folder already exists. Do you want to overwrite the folder?",
L"No title",
MB_YESNOCANCEL | MB_ICONQUESTION
);
I'd like to just change the buttons text to Overwrite, Skip, Cancel.
What's the most simple way?
I have to make this as having same look and feel with Windows default messagebox.
As said by others, a typical way is to create a dialog resource and have a completely independent dialog, which GUI you need to design in the way that it looks like standard dialog (to meet your request for feel and look). If you want to accept text messages, you might probably need to add code which resizes the window appropriately.
Still, there is another option for those who feel like diving into advanced things. While MessageBox API does not offer much for fint tuning, you still have SetWindowsHookEx in your hands. Having registgered the hook, you can intercept standard MessageBox window procedure and subclass it in the way you like.
Typical things include:
changing button text
adding more controls
adding timed automatic close
Hooking standard window can do all of those.
UPD. Hey, I realized I have some code with SetWindowsHookEx to share: http://alax.info/blog/127
You could create an own dialog. Or you could use a window hook as described in this article.
An archived version of the article can be found on web.archive.com.
Make a dialog resource (with a GUI editor, or by hand) and call DialogBox on it. There's no way to alter MessageBox behaviour, other than what's supported by its arguments.
That said, your message box can very well use stock Yes/No options.
The task dialog functionality introduced in Vista does exactly what you want and follows the prevailing system theme. However, if you have to support XP, then this will be of little comfort to you.
I know this question is old, but I just stumbled upon it now.
I would like to expand the other answers in regards to using a TaskDialog instead of a MessageBox. Here's a concise example of using a TaskDialog to do precisely what was asked; change the button's texts:
const TASKDIALOG_BUTTON buttons[] = { {IDYES, L"Overwrite"}, {IDNO, L"Skip"}, {IDCANCEL, L"Cancel"} };
TASKDIALOGCONFIG taskDialogConfig = {
.cbSize = sizeof(TASKDIALOGCONFIG),
.pszMainIcon = TD_WARNING_ICON, // TaskDialog does not support a question icon; see below
.pButtons = buttons,
.cButtons = ARRAYSIZE(buttons),
.pszWindowTitle = L"No title",
.pszContent = L"Target folder already exists. Do you want to overwrite the folder?"
};
TaskDialogIndirect(&taskDialogConfig, NULL, NULL, NULL);
Some noteworthy things:
You need to use TaskDialogIndirect, not the basic TaskDialog function
when not specifying a parent window, the icon specified in pszMainIcon is displayed in the title bar as well
There is no equivalent to the MessageBox's MB_ICONQUESTION, quoting a quote from this forumpost: Don't use the question mark icon to ask questions. Again, use the question mark icon only for Help entry points. There is no need to ask questions using the question mark icon anyway—it's sufficient to present a main instruction as a question.
checking which button was selected would have to be done by passing a pointer to an int as the second argument of TaskDialogIndirect and checking its value on return (the documentation should be pretty clear)
Here is a small open source library that allows you to customize Message Boxes. Developed by Hans Ditrich.
I have successfully used it in another POC that allows embedding a custom icon in such MessageBox that can be called even from a Console application.
I should also point to the Task Dialog. Here is an example of using it:
int nButtonPressed = 0;
TaskDialog(NULL, hInst,
MAKEINTRESOURCE(IDS_APPLICATION_TITLE),
MAKEINTRESOURCE(IDS_DOSOMETHING),
MAKEINTRESOURCE(IDS_SOMECONTENT),
TDCBF_OK_BUTTON | TDCBF_CANCEL_BUTTON,
TD_WARNING_ICON,
&nButtonPressed);
if (IDOK == nButtonPressed)
{
// OK button pressed
}
else if (IDCANCEL == nButtonPressed)
{
// Cancel pressed
}

win32 DialogBox app: how to make the dialog box hidden on startup?

I have a win32 app which uses DialogBox() to display its main window.
I now want to start this app up with the dialog box invisible, and later set it visible with
SetWindowPos(hDlg, HWND_TOPMOST, ...
Unfortunately
http://msdn.microsoft.com/en-us/library/ms645452(VS.85).aspx
The function displays the dialog box (regardless of whether the template specifies the WS_VISIBLE style)
... it seems that there's no way of doing this using DialogBox().
I could add a call to
SetWindowPos(hDlg, HWND_NOTOPMOST...
in my dialog procedure in the WM_INITDIALOG handler.
... but I'm concerned that under heavy system loading the dialog box will briefly appear then disappear, giving an ugly flicker effect.
Is there a way of creating my dialog box via DialogBox() without showing it?
ShowWindow(Hwnd, SW_HIDE);
i think it will work.
http://www.winprog.org/tutorial/modeless_dialogs.html
I had some success with this technique
void CMyDlg::OnWindowPosChanging(WINDOWPOS* lpWndPos)
{
// hide dialog
lpWndPos->flags &= ~SWP_SHOWWINDOW;
CDialog::OnWindowPosChanging(lpWndPos);
}
from here

How to create full screen window with MFC?

I want to create full screen topmost (screen saver) window with MFC? How to create such full screen window in MFC? I tried to create win32 application and i am able to create fullscreen top most window but i want to create using MFC so later i can put different MFC controls on that window?
Please help me.
Thanks,
Jim.
I think removing the border from the dialog resource and showing the window as maximized (ShowWindow(SW_SHOWMAXIMIZED)) should do the job.
As for topmost use the System Modal style in the dialog resource.
I do it with a Dialog Box app. In the resource editor properties for the dialog resource, set Border=None and Title Bar=False to eliminate all border elements. In OnInitDialog, use the following to resize the dialog to the entire desktop:
CRect rcDesktop;
rcDesktop.left = GetSystemMetrics(SM_XVIRTUALSCREEN);
rcDesktop.right = rcDesktop.left + GetSystemMetrics(SM_CXVIRTUALSCREEN);
rcDesktop.top = GetSystemMetrics(SM_YVIRTUALSCREEN);
rcDesktop.bottom = rcDesktop.top + GetSystemMetrics(SM_CYVIRTUALSCREEN);
MoveWindow(rcDesktop, FALSE);
This code works on multiple monitors, unlike maximizing the window.
No need to worry about making the window topmost, Windows will display it on a dedicated desktop with no other windows present.
You should be able to adapt the example code here to do what you want:
MSDN: Initializing a dialog box

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