Sitting behind the computer in the early morning, I really liked to have the brightness of my two LCD monitors dimmed a bit and ajusted to the little light, like I would do on my laptop.
So I looked up the API for the NVIDIA graphic card:
The DTCFG Desktop Configuration Commands supply a function:
setbrightness
Description
Set the brightness level of the specified display. This command overrides previous seticm settings.
Format
rundll32.exe NvCpl.dll,dtcfg setbrightness <display#> [<NV device moniker>] <color channel> <value:-125—125>
Where color channel is one of the following:
- red
- blue
- green
- all
value is in the range -125 through 125.
Example
rundll32.exe NvCpl.dll,dtcfg setbrightness 2 all 100
Sets the brightness level for all color channels on display #2 to 100.
Example code (VB6) simply uses shell command to execute the command.
Software disclaimer
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
