Performance is bad

[steve]

I create a circle image form, drag and drop this image on the screen, if I drag
this circle fast to the right, the left part of the image is cut, looks to me the performance is not good as I expected, another issue is if I only create a windows form, then goto task manager, the memory usage is more than 15mb, is there any way can reduce the memory usage?

[Chua Wen Ching]

Hi Steve,

I create a circle image form, drag and drop this image on the screen, if I drag this circle fast to the right, the left part of the image is cut, looks to me the
--> Do you mean in visual studio .net or during runtime of you application?

Cheers.
--
Regards,
Chua Wen Ching :)
"steve" wrote:

I create a circle image form, drag and drop this image on the screen, if I drag
this circle fast to the right, the left part of the image is cut, looks to me the performance is not good as I expected, another issue is if I only create a windows form, then goto task manager, the memory usage is more than 15mb, is there any way can reduce the memory usage?

[steve]

Chua Wen,

Thanks for the quick response, this is run time application, you can create a form image(any shape) easily from C#, and run the image, part of the code as below(get from MSDN):
private void Form1_MouseDown (object sender, ystem.Windows.F orms.MouseEvent Args e)
{
int xOffset;
int yOffset;

if (e.Button == MouseButtons.Le ft)
{
xOffset = -e.X;
yOffset = -e.Y;
mouseOffset = new Point(xOffset, yOffset);
isMouseDown = true;
}

}

private void Form1_MouseMove (object sender, ystem.Windows.F orms.MouseEvent Args e)
{
if (isMouseDown)
{ Point mousePos = Control.MousePo sition;
mousePos.Offset (mouseOffset.X, mouseOffset.Y);
Location = mousePos;
}
}

private void Form1_MouseUp(o bject sender, System.Windows. Forms.MouseEven tArgs e)
{
if (e.Button == MouseButtons.Le ft)
{
isMouseDown = false;
}
}
By the way, did you aware that the memory usgae issue, as long as you create a Windows form from C#, the minimun memory usage is at least 14-15MB.

B. RGDS
Steve

Chua Wen Ching" wrote:

Hi Steve,

I create a circle image form, drag and drop this image on the screen, if I drag this circle fast to the right, the left part of the image is cut, looks to me the
--> Do you mean in visual studio .net or during runtime of you application?

Cheers.
--
Regards,
Chua Wen Ching :)
"steve" wrote:

I create a circle image form, drag and drop this image on the screen, if I drag
this circle fast to the right, the left part of the image is cut, looks to me the performance is not good as I expected, another issue is if I only create a windows form, then goto task manager, the memory usage is more than 15mb, is there any way can reduce the memory usage?

[Chua Wen Ching]

Hi Steve,

Sorry for the late reply.

1) Well I tested the memory usage of a normal windows app.

Debug mode - 9.5 k

Release mode - 8.5 k

2) After running your app, i do agree:

Debug mode - 15.5k

Release mode - 14.5k

3) To improve performance, you can look into clr profiling. Maybe you can see how things can be improve.

4) You forget to include:

bool isMouseDown = false;
Point mouseOffset;

Lucky i able to cope with it. Haha!

It proves that release mode are always faster. When you develop larger apps, you will notice the difference.

How much of memory you using? It seems to be okay to me, no cutting of image.

Thanks.
--
Regards,
Chua Wen Ching :)
"steve" wrote:

Chua Wen,

During the run time, you can create a image form(any shape) and testing.
some of the code as below which I get from the MSDN
=============== =============== ====
private void Form1_MouseDown (object sender, system.Windows. Forms.MouseEven tArgs e)
{
int xOffset;
int yOffset;
if (e.Button == MouseButtons.Le ft)
{
xOffset = -e.X;
yOffset = -e.Y;
mouseOffset = new Point(xOffset, yOffset);
isMouseDown = true;
}
}

private void Form1_MouseMove (object sender, system.Windows. Forms.MouseEven tArgs e)
{
if (isMouseDown)
{ Point mousePos = Control.MousePo sition;
mousePos.Offset (mouseOffset.X, mouseOffset.Y);
Location = mousePos;
}
}

private void Form1_MouseUp(o bject sender, System.Windows. Forms.MouseEven tArgs e)
{
if (e.Button == MouseButtons.Le ft)
{
isMouseDown = false;
}
}

"Chua Wen Ching" wrote:

Hi Steve,

I create a circle image form, drag and drop this image on the screen, if I drag this circle fast to the right, the left part of the image is cut, looks to me the
--> Do you mean in visual studio .net or during runtime of you application?

Cheers.
--
Regards,
Chua Wen Ching :)
"steve" wrote:

I create a circle image form, drag and drop this image on the screen, if I drag
this circle fast to the right, the left part of the image is cut, looks to me the performance is not good as I expected, another issue is if I only create a windows form, then goto task manager, the memory usage is more than 15mb, is there any way can reduce the memory usage?

[steve]

Chua Wen,

Sorry I just back from vacation and can I contact with you?
My email address is st************@ hotmail.com

B. RGDS
Steve

"Chua Wen Ching" wrote:

Hi Steve,

Sorry for the late reply.

1) Well I tested the memory usage of a normal windows app.

Debug mode - 9.5 k

Release mode - 8.5 k

2) After running your app, i do agree:

Debug mode - 15.5k

Release mode - 14.5k

3) To improve performance, you can look into clr profiling. Maybe you can see how things can be improve.

4) You forget to include:

bool isMouseDown = false;
Point mouseOffset;

Lucky i able to cope with it. Haha!

It proves that release mode are always faster. When you develop larger apps, you will notice the difference.

How much of memory you using? It seems to be okay to me, no cutting of image.

Thanks.
--
Regards,
Chua Wen Ching :)
"steve" wrote:

Chua Wen,

During the run time, you can create a image form(any shape) and testing.
some of the code as below which I get from the MSDN
=============== =============== ====
private void Form1_MouseDown (object sender, system.Windows. Forms.MouseEven tArgs e)
{
int xOffset;
int yOffset;
if (e.Button == MouseButtons.Le ft)
{
xOffset = -e.X;
yOffset = -e.Y;
mouseOffset = new Point(xOffset, yOffset);
isMouseDown = true;
}
}

private void Form1_MouseMove (object sender, system.Windows. Forms.MouseEven tArgs e)
{
if (isMouseDown)
{ Point mousePos = Control.MousePo sition;
mousePos.Offset (mouseOffset.X, mouseOffset.Y);
Location = mousePos;
}
}

private void Form1_MouseUp(o bject sender, System.Windows. Forms.MouseEven tArgs e)
{
if (e.Button == MouseButtons.Le ft)
{
isMouseDown = false;
}
}

"Chua Wen Ching" wrote:

Hi Steve,

I create a circle image form, drag and drop this image on the screen, if I drag this circle fast to the right, the left part of the image is cut, looks to me the
--> Do you mean in visual studio .net or during runtime of you application?

Cheers.
--
Regards,
Chua Wen Ching :)
"steve" wrote:

> I create a circle image form, drag and drop this image on the screen, if I drag
> this circle fast to the right, the left part of the image is cut, looks to me the performance is not good as I expected, another issue is if I only create a windows form, then goto task manager, the memory usage is more than 15mb, is there any way can reduce the memory usage?