The 180 degree rotation is not taking place. it gives failure in c

Question

0.00/5 (No votes)

See more:

Progaram for Changing the display setting:

#include "stdafx.h"
#include <stdio.h>

#define WINVER 0x0501
#define WIN32_LEAN_AND_MEAN
#include <windows.h>

int main(int argc, char* argv[])
{
	DEVMODE dm;
	
	ZeroMemory(&dm, sizeof(dm));
	
	dm.dmSize = sizeof(dm);
   
   if (0 != EnumDisplaySettings(NULL, ENUM_CURRENT_SETTINGS, &dm))
   {


     dm.dmPelsHeight= 800;
     dm.dmPelsWidth = 600;

	 dm.dmDisplayOrientation = DMDO_180;

	 dm.dmFields =  DM_PELSWIDTH | DM_PELSHEIGHT | DM_DISPLAYORIENTATION;
	 
	 if(DISP_CHANGE_SUCCESSFUL  == ChangeDisplaySettings(&dm,0))
	 {
		 printf("\nSuccess\n");
	 }
	 else
	 {
		 printf("\nFailure\n");
	 }
   }
   return 0;
}

It works fine.
if i try for the 90 and 270 rotation means it fine.
But if i try 0 and 180 means it goes to failure .
Please give the solution for me.

[edit]Code block added to preserve format, and remove HTML tag processing - OriginalGriff[/edit]
[edit]Missed the added closing tags - doh! - OriginalGriff[/edit]

Posted 1-Nov-11 20:30pm

@BangIndia

Updated 1-Nov-11 22:37pm

CPallini

v4

Add a Solution

Comments

Amir Mahfoozi 2-Nov-11 2:38am

Try your code on other type of monitors to find out it depends on your code or your monitor.

@BangIndia 2-Nov-11 2:49am

ok. sir..

@BangIndia 2-Nov-11 2:52am

in other machine also same sir..

2 solutions

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

tolw · Answer 1 · 2011-11-01T22:22:00

ChangeDisplaySettings actually returns a value saying what went wrong. Instead of checking for the successful result only try using a switch with something more than just 'Failure'. If you check the docs the possible return values are:

DISP_CHANGE_SUCCESSFUL
DISP_CHANGE_BADDUALVIEW
DISP_CHANGE_BADFLAGS
DISP_CHANGE_BADMODE
DISP_CHANGE_BADPARAM
DISP_CHANGE_FAILED
DISP_CHANGE_NOTUPDATED
DISP_CHANGE_RESTART

E.F. Nijboer · Answer 2 · 2011-11-01T22:21:00

Solution 1

If 90 and 270 degrees work it could just be that the device isn't capable to do it. You could check it out using the CDS_TEST flag using ChangeDisplaySettingsEx. (or with the result in dm after you call EnumDisplaySettings)
http://msdn.microsoft.com/en-us/library/aa452713.aspx[^]

Good luck!

Posted 1-Nov-11 22:21pm

E.F. Nijboer

Comments

@BangIndia 2-Nov-11 5:35am

if i declare DMDO_0 it produce error sir..