Mateen
asked on
Screen Resolution :
https://www.experts-exchange.com/questions/20950860/CHANGING-DISPLAY-SETTING-THROUGH-PROGRMME.html may please be referred.
After making some chnages
THERE IS ONLY ONE PROBLEM NOW. WHEN THE RESOLUTION CHANGES TO 1024 X 768 THEN THE TASKBAR LINE (BOTTOM LINE WHICH CONTAINS START BUTTON AND OTHER APPLICATION WHEN MINIMIZED) IS CHANGING ITS PLACE. IT IS MOVING UP ROUGHLY 1/5TH OF THE SCREEN.
My window contains as under:
Window Name : w_res2
Instance Variables:
long CurrHRes ,CurrVRes ,CurrBPP
ulong DM_BITSPERPEL_H = 4*16*16*16*16
long DM_PELSWIDTH_H = 8*16*16*16*16
long DM_PELSHEIGHT_H = 16*16*16*16*16
long DM_DISPLAYFLAGS_H = 2*16*16*16*16*16
long CDS_FORCE = 4*16*16*16*16*16*16*16
long i_std_width = 1024
long i_std_height = 768
long i_std_perl = 16
long i_prv_width =0
long i_prv_height =0
long i_prv_perl =0
long i_std_bpp=16
Local External Functions:
FUNCTION long ChangeDisplaySettingsA (ref devmode lpst, ulong Flags) LIBRARY "USER32.DLL"
FUNCTION int GetSystemMetrics(int indexnum) LIBRARY "user32.dll"
Open Event:
devmode dm
long ret
CurrHRes = GetSystemMetrics(0)
CurrVRes = GetSystemMetrics(1)
i_prv_width=currHres
i_prv_height=currVres
i_prv_perl=i_std_perl //=16
if i_prv_width = i_std_width and i_prv_height = i_std_height then return
dm.dmPelsWidth = i_std_width
dm.dmPelsHeight = i_std_height
dm.dmBitsPerPel = i_std_perl
dm.dmFields = DM_PELSWIDTH_H + DM_PELSHEIGHT_H + DM_BITSPERPEL_H + DM_DISPLAYFLAGS_H
dm.dmSize = 148
ret = ChangeDisplaySettingsA(dm,
CurrBPP = i_std_bpp
CloseQuery Event:
devmode dm
long ret
CurrHRes = GetSystemMetrics(0)
CurrVRes = GetSystemMetrics(1)
i_prv_width=currHres
i_prv_height=currVres
i_prv_perl=i_std_perl //=16
if i_prv_width = i_std_width and i_prv_height = i_std_height then return
dm.dmPelsWidth = i_std_width
dm.dmPelsHeight = i_std_height
dm.dmBitsPerPel = i_std_perl
dm.dmFields = DM_PELSWIDTH_H + DM_PELSHEIGHT_H + DM_BITSPERPEL_H + DM_DISPLAYFLAGS_H
dm.dmSize = 148
ret = ChangeDisplaySettingsA(dm,
CurrBPP = i_std_bpp
When the window w_res2 is run the screen resolution successfully changes to 1024 x 768 and when the window is closed
the screen resolution is changed back to its original value.
After making some chnages
THERE IS ONLY ONE PROBLEM NOW. WHEN THE RESOLUTION CHANGES TO 1024 X 768 THEN THE TASKBAR LINE (BOTTOM LINE WHICH CONTAINS START BUTTON AND OTHER APPLICATION WHEN MINIMIZED) IS CHANGING ITS PLACE. IT IS MOVING UP ROUGHLY 1/5TH OF THE SCREEN.
My window contains as under:
Window Name : w_res2
Instance Variables:
long CurrHRes ,CurrVRes ,CurrBPP
ulong DM_BITSPERPEL_H = 4*16*16*16*16
long DM_PELSWIDTH_H = 8*16*16*16*16
long DM_PELSHEIGHT_H = 16*16*16*16*16
long DM_DISPLAYFLAGS_H = 2*16*16*16*16*16
long CDS_FORCE = 4*16*16*16*16*16*16*16
long i_std_width = 1024
long i_std_height = 768
long i_std_perl = 16
long i_prv_width =0
long i_prv_height =0
long i_prv_perl =0
long i_std_bpp=16
Local External Functions:
FUNCTION long ChangeDisplaySettingsA (ref devmode lpst, ulong Flags) LIBRARY "USER32.DLL"
FUNCTION int GetSystemMetrics(int indexnum) LIBRARY "user32.dll"
Open Event:
devmode dm
long ret
CurrHRes = GetSystemMetrics(0)
CurrVRes = GetSystemMetrics(1)
i_prv_width=currHres
i_prv_height=currVres
i_prv_perl=i_std_perl //=16
if i_prv_width = i_std_width and i_prv_height = i_std_height then return
dm.dmPelsWidth = i_std_width
dm.dmPelsHeight = i_std_height
dm.dmBitsPerPel = i_std_perl
dm.dmFields = DM_PELSWIDTH_H + DM_PELSHEIGHT_H + DM_BITSPERPEL_H + DM_DISPLAYFLAGS_H
dm.dmSize = 148
ret = ChangeDisplaySettingsA(dm,
CurrBPP = i_std_bpp
CloseQuery Event:
devmode dm
long ret
CurrHRes = GetSystemMetrics(0)
CurrVRes = GetSystemMetrics(1)
i_prv_width=currHres
i_prv_height=currVres
i_prv_perl=i_std_perl //=16
if i_prv_width = i_std_width and i_prv_height = i_std_height then return
dm.dmPelsWidth = i_std_width
dm.dmPelsHeight = i_std_height
dm.dmBitsPerPel = i_std_perl
dm.dmFields = DM_PELSWIDTH_H + DM_PELSHEIGHT_H + DM_BITSPERPEL_H + DM_DISPLAYFLAGS_H
dm.dmSize = 148
ret = ChangeDisplaySettingsA(dm,
CurrBPP = i_std_bpp
When the window w_res2 is run the screen resolution successfully changes to 1024 x 768 and when the window is closed
the screen resolution is changed back to its original value.
ASKER
Desperately waiting for some feed back by dear experts.
SOLUTION
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hi mateen,
just go thru the following link... i'm sure ur problem will be solved...
https://www.experts-exchange.com/questions/20600262/Change-Screen-Resolution-Doesn't-move-status-Bar.html
it says u need to pass CDS_UPDATEREGISTRY .... u have tried with CDS_FORCE....
Cheers,
Rosh
just go thru the following link... i'm sure ur problem will be solved...
https://www.experts-exchange.com/questions/20600262/Change-Screen-Resolution-Doesn't-move-status-Bar.html
it says u need to pass CDS_UPDATEREGISTRY .... u have tried with CDS_FORCE....
Cheers,
Rosh
ASKER CERTIFIED SOLUTION
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ASKER
Hi berXpert
When I opened this question today I saw that comments have come from u and diaroshan:
Since diaroshan said:
eureka... problem solved...
just declare the following instance variable....
Long CDS_UPDATEREGISTRY = 1
...and replace CDS_FORCE with CDS_UPDATEREGISTRY throughout ur code and ur status bar problem is solved....
So I didn't test your code and did as said by dia. The problem seems to be gone now. I do believe that If I had given you the snapshot u asked you would have also spotted my problem area.
Anyway, thanks for your efforts and it would be appreciated by me.
Mateen:
When I opened this question today I saw that comments have come from u and diaroshan:
Since diaroshan said:
eureka... problem solved...
just declare the following instance variable....
Long CDS_UPDATEREGISTRY = 1
...and replace CDS_FORCE with CDS_UPDATEREGISTRY throughout ur code and ur status bar problem is solved....
So I didn't test your code and did as said by dia. The problem seems to be gone now. I do believe that If I had given you the snapshot u asked you would have also spotted my problem area.
Anyway, thanks for your efforts and it would be appreciated by me.
Mateen:
ASKER
Thanks Dia:
Did as suggested by u. Seems to be quite ok now.
I have tested this in windows 2000 professional. Would it be same for the following environment.
Windows 98
Windows XP Home Edition
BTW, Since https://www.experts-exchange.com/questions/20968630/Screen-Resolution.html
https://www.experts-exchange.com/questions/20950860/CHANGING-DISPLAY-SETTING-THROUGH-PROGRMME.html contains the same topic, so please give comments in all, enabling me to accept and close all questions.
Mateen:
Did as suggested by u. Seems to be quite ok now.
I have tested this in windows 2000 professional. Would it be same for the following environment.
Windows 98
Windows XP Home Edition
BTW, Since https://www.experts-exchange.com/questions/20968630/Screen-Resolution.html
https://www.experts-exchange.com/questions/20950860/CHANGING-DISPLAY-SETTING-THROUGH-PROGRMME.html contains the same topic, so please give comments in all, enabling me to accept and close all questions.
Mateen:
Mateen,
glad to help and ur question helped me come across a lot of my issues too..
Cheers,
Rosh
ASKER