[RESOLVED] [C++] Win32 Program Wide Keyboard Shortcut

[meesa]

Thanks for all your help then.

[meesa]

I found it!

With the help of http://www.cplusplus.com/forum/windows/36860 I changed my search from "shortcut" to "hotkey" I found something about keyboard accelerators (http://social.msdn.microsoft.com/For...2-617d69557057) which led me here: http://msdn.microsoft.com/en-us/libr...ting_acc_table

After figuring out the way it worked, I have this (Spread across several files)

/*Keyboard Accelerators*/
ShortAccel ACCELERATORS {
	VK_ESCAPE, IDA_ESC, VIRTKEY
}

/*---*/
//Load accelerators
HACCEL haccel;
haccel=LoadAccelerators(hinst, _T("ShortAccel"));
if(!haccel) //Make sure it loaded
	MessageBox(hwnd, _T("Unable to load accelerator table"), _T("Error"), MB_ICONERROR);


while(GetMessage(&msg, NULL, 0, 0) > 0){
	if(!TranslateAccelerator(FindWindow(_T("SettingsWindow"),_T("Settings")),haccel,&msg)){
		TranslateMessage(&msg);
		DispatchMessage(&msg);
	}
}

/*---*/
#define IDA_ESC 4001

/*---*/
LRESULT fnSettingsProc_OnCommand(lpWndEventArgs wea){
	switch(LOWORD(wea->wParam)){
		case IDA_ESC: //Name given in accelerator table
			DestroyWindow(wea->hwnd);
			break;
	}
	return 0;
}

It works prefectly.

[Igor Vartanov]

You may be surprised, but code suggested by Mark hardly differs much from the last code you showed. What translate accelerator does is sending WM_COMMAND with corresponding id in case virtual key can be found in the table.

	while(GetMessage(&msg, NULL, 0, 0) > 0){
		if (msg.message == WM_KEYDOWN &&
			LOWORD(msg.wParam) == VK_ESCAPE)
			SendMessage(FindWindow(_T("SettingsWindow"),_T("Settings")), WM_COMMAND, IDA_ESC, 0);
		if(!IsDialogMessage(glbWin.vScrollContent, &msg)){
		TranslateMessage(&msg);
		DispatchMessage(&msg);
		}
	}

[meesa]

I see what you mean. I think I'll stick with the method I found though, as it is easier to expand.

[Igor Vartanov]

...and you're 100% right. My point was just to make a bond between what you've found yourself and what you've been told of before.

[meesa]

And that I do appreciate. I wouldn't have known that is how it worked if it wasn't for your telling me.

[hypheni]

You can do something as follows for your message loop:

	while(GetMessage(&msg, NULL, 0, 0) > 0){
		if (msg.message == WM_KEYDOWN &&
			LOWORD(msg.wParam) == VK_ESCAPE)
			MessageBox(hwnd, _T("Cancel"), _T(""), MB_OK);
		if(!IsDialogMessage(glbWin.vScrollContent, &msg)){
		TranslateMessage(&msg);
		DispatchMessage(&msg);
		}
	}

of course, instead of displaying a messagebox, forward the escape command to the correct window.

This can done in the window callback handler. ie: in WindowProc. And for removing that behavior instead of showing a msgbox just drop the value bu setting a NULL.

LRESULT CALLBACK wndProc (HWND hW, UINT msg, WPARAM wP, LPARAM lP)
{
  switch (msg)
  {
      case WM_KEYDOWN:
      {
          if (wParam == VK_ESCAPE)
             wParam = NULL;
      }
  }
  return 0;
}

just an alternative for the above code.

[Igor Vartanov]

just an alternative for the above code.

No, it's not. The code in the message loop works with focus set anywhere in the app. Unlike your "alternative" which requires to have a focus on the particular window.