I have a window into which I play a video.
The video is left aligned.
With MCI_WHERE I can know the video size (w & h).
Knowing that I would like to center the video.
One solution is to make a parent window centered onto the screen but is it on other way to to it?
Thanks.
get the screen dimensions using GetSystemMetrics (SM_CXSCREEN and M_CYSCREEN)
get the parent window rectangle, using GetWindowRect (returns screen coordinates)
and, assuming you know the video dimensions....
do a little math to figure out where to place the video using client coordinates
you may need to use ScreenToClient to convert coordinates
The answer is : :t :greenclp: :eusa_clap: :eusa_dance:
Quote
Get the client rect
INVOKE GetClientRect,__hWnd,ADDR _Rc
Get the size of the video
INVOKE mciSendCommand,_mciOpen.wDeviceID,MCI_WHERE,MCI_DGV_WHERE_DESTINATION,ADDR _MciRectParm
mov eax,__hWnd
mov _MciRectParm.dwCallback,eax
mov ecx,_Rc.right
sub ecx,_MciRectParm.rc.right
shr ecx,1
mov edx,_Rc.bottom
sub edx,_MciRectParm.rc.bottom
shr edx,1
_MciRectParm.rc.left,ecx
_MciRectParm.rc.top,edx
INVOKE mciSendCommand,_mciOpen.wDeviceID,MCI_PUT,MCI_DGV_PUT_WINDOW or MCI_DGV_RECT,ADDR _MciRectParm
The MCI_PUT command place the video as I expected
I prefer GetSystemInfo (https://msdn.microsoft.com/fr-fr/library/windows/desktop/ms724381(v=vs.85).aspx) because the taskbar is not seen as a free space. Screen dimensions remove it. Like this windows can be created without covering the taskbar.
In my case I could make a MoveWindow too but I preferred that MCI does it without changing my code.