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dialog box + accelerators

Null (957)
Is it possible to use accelerators in dialog box? In window-based program I have to use TranslateAccelerator function but how about dialog-based program?
Lamblion (642)
It works the same way with dialogs as with windows. After all, a dialog box is nothing but a window.
Null (957)
The problem is that TranslateAccelerator and DispatchMessage functions must be in message loop and I can't do this for dialog box.
Lamblion (642)
If your dialog box is modeless, you can handle the keystrokes by loading and destroying your accelerators. I have multiple dialogs boxes in an application with a number of different accelerator tables for each one. I simply load and destroy my accelerators as needed.
Null (957)
It doesn't work for me:
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//
// main.cpp
//

#include <windows.h>
#include "header.h"

HACCEL hacc;
HINSTANCE hinst; //global hinstance of this program

BOOL CALLBACK DlgProc(HWND hwnd,UINT message,WPARAM wParam,LPARAM lParam)
{
switch(message)
  {
     case WM_INITDIALOG:
          hacc=LoadAccelerators(hinst,MAKEINTRESOURCE(IAC_ACCELERATOR));
          return true;

     case WM_COMMAND:
          switch(LOWORD(wParam))
            {
                case IDA_DOSOMETHING:
                   MessageBox(hwnd,"Accelerator works!","OK",64); // This message box must show up when I press 'x' on keyboard
                   break;

            }
          break;

   default: return false;
  }

}




int WinMain(HINSTANCE hThis,HINSTANCE hPrev,LPSTR cmd,int xxx)
{
hinst=hThis;

DialogBox(GetModuleHandle(NULL),MAKEINTRESOURCE(IDD_DLG),0,DlgProc);



}

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//
// header.h
//

#define IDD_DLG          665
#define IAC_ACCELERATOR 1234 // accelerator itself
#define IDA_DOSOMETHING 4567 // action




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//
// resource.rc
//

#include <windows.h>
#include "header.h"

// The dialog
IDD_DLG DIALOG 100,100,100,100
STYLE DS_MODALFRAME | DS_SETFONT | WS_BORDER | WS_CAPTION | WS_DLGFRAME | WS_POPUP | WS_SYSMENU
BEGIN

END


IAC_ACCELERATOR ACCELERATORS
BEGIN
    "x",            IDA_DOSOMETHING, ASCII
END

Or maybe it doesn't work for some other reason?
Lamblion (642)
You can't do that with MessageBox(). You can only do this with real dialog boxes.
Null (957)
But this IS a dialog box and the message box must show up when I press 'x' on keyboard. As I said, in window-based program I used TranslateAccelerator() function:
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  // message loop
    while (GetMessage (&messages, NULL, 0, 0))
    {
        TranslateAccelerator(hwnd,hacc,&messages); // <---
        TranslateMessage(&messages);
        DispatchMessage(&messages);
    }

but dialog box doesn't have message loop and accelerator isn't translated.
Lamblion (642)
Oh, okay. I see now. It should work. Perhaps try this...

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IAC_ACCELERATOR ACCELERATORS
BEGIN
     "x"               IDA_DOSOMETHING, VIRTKEY, CONTROL, NOINVERT
END


IOW, instead of using the ASCII designation, except in the above example you would press Ctrl+x

See if that does the trick.

Also, are you first destroying your initial accelerator before loading the second one?
Last edited on
Lamblion (642)
After looking more carefully at your code, I THINK you must use a MODELESS dialog box in order to trap the key.
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