Detecting Resolution Change

[Zyrenthian]

Hi All,
Is there a way to detect when the windows screen resoluiton changes from within my app? I was first thinking along the lines of PreTranslateMessage butI am not sure it this is the way to go concidering my app would need focus for the PreTranslateMessage to happend (and I am not sure if PreTranslateMessage can even detect that). How would you go about doing this? Hooks? Please post any ideas.

matt

 

[Zyrenthian]

Answer:

WindowProc with WM_SETTINGCHANGE for a message.

Matt

 

[srfink]

Hi Matt,
Have you seen ON_WM_DEVMODECHANGE and ON_WM_DISPLAYCHANGE?
Although ON_WM_DISPLAYCHANGE is nowhere to be found in the Microsoft documentation, the dev mode change handler that you would write does get control when you change the
screen resolution in the control panel, because all top level CWnd objects get this message. In this event handler,
you could then get the new screen resolution. Eg.

void CTopmostView::OnDevModeChange(LPTSTR lpDeviceName)
{
CView::OnDevModeChange(lpDeviceName);
int xWidth = GetSystemMetrics(SM_CXSCREEN);
int nHeight = GetSystemMetrics(SM_CYSCREEN);
}

Hope this helps

 

[Zyrenthian]

Thanx!