i draw on a panel, in the OnPaint event. The drawing contains lot of
lines, texts, arrows, ...
Also, when i move the mouse over the panel, i draw a large cross under
the mouse pointer to show to the user the position of mouse.
all work properly...but when i move the mouse, i have a bad screen
effect...it seems that all drawing are "flashing"...
with 2 or 3 lines,no problems. But over 500 lines and more, this
effect is very bad.
Have you this problem too ? if no can you give me an sample of drawing
or ( better ) a solution for me ?
But the last solution must be don"t work, the first solution is the better for me :)
bye !
"XLaurent" a écrit dans le message de news:
hello all,
i have a problem when i make drawing.
i draw on a panel, in the OnPaint event. The drawing contains lot of lines, texts, arrows, ... Also, when i move the mouse over the panel, i draw a large cross under the mouse pointer to show to the user the position of mouse.
all work properly...but when i move the mouse, i have a bad screen effect...it seems that all drawing are "flashing"...
with 2 or 3 lines,no problems. But over 500 lines and more, this effect is very bad.
Have you this problem too ? if no can you give me an sample of drawing or ( better ) a solution for me ?
Hello !
Sorry for my poor english ... I'm french ;)
Try to draw all your drawing into a bitmap
and draw it on the panel.
You can also to add in the constructor of your panel this code :
But the last solution must be don"t work, the first solution is the better
for me :)
bye !
"XLaurent" <x_laurent69@hotmail.com> a écrit dans le message de news:
a205aac.0411250944.6211f08@posting.google.com...
hello all,
i have a problem when i make drawing.
i draw on a panel, in the OnPaint event. The drawing contains lot of
lines, texts, arrows, ...
Also, when i move the mouse over the panel, i draw a large cross under
the mouse pointer to show to the user the position of mouse.
all work properly...but when i move the mouse, i have a bad screen
effect...it seems that all drawing are "flashing"...
with 2 or 3 lines,no problems. But over 500 lines and more, this
effect is very bad.
Have you this problem too ? if no can you give me an sample of drawing
or ( better ) a solution for me ?
But the last solution must be don"t work, the first solution is the better for me :)
bye !
"XLaurent" a écrit dans le message de news:
hello all,
i have a problem when i make drawing.
i draw on a panel, in the OnPaint event. The drawing contains lot of lines, texts, arrows, ... Also, when i move the mouse over the panel, i draw a large cross under the mouse pointer to show to the user the position of mouse.
all work properly...but when i move the mouse, i have a bad screen effect...it seems that all drawing are "flashing"...
with 2 or 3 lines,no problems. But over 500 lines and more, this effect is very bad.
Have you this problem too ? if no can you give me an sample of drawing or ( better ) a solution for me ?
ACH
Hello, You can read also precedent question "Pourquoi jamais de réponse ???" for "DoubleBuffer" solution.
"XLaurent" a écrit :
hello all,
i have a problem when i make drawing.
i draw on a panel, in the OnPaint event. The drawing contains lot of lines, texts, arrows, ... Also, when i move the mouse over the panel, i draw a large cross under the mouse pointer to show to the user the position of mouse.
all work properly...but when i move the mouse, i have a bad screen effect...it seems that all drawing are "flashing"...
with 2 or 3 lines,no problems. But over 500 lines and more, this effect is very bad.
Have you this problem too ? if no can you give me an sample of drawing or ( better ) a solution for me ?
Hello,
You can read also precedent question "Pourquoi jamais de réponse ???" for
"DoubleBuffer" solution.
"XLaurent" a écrit :
hello all,
i have a problem when i make drawing.
i draw on a panel, in the OnPaint event. The drawing contains lot of
lines, texts, arrows, ...
Also, when i move the mouse over the panel, i draw a large cross under
the mouse pointer to show to the user the position of mouse.
all work properly...but when i move the mouse, i have a bad screen
effect...it seems that all drawing are "flashing"...
with 2 or 3 lines,no problems. But over 500 lines and more, this
effect is very bad.
Have you this problem too ? if no can you give me an sample of drawing
or ( better ) a solution for me ?
Hello, You can read also precedent question "Pourquoi jamais de réponse ???" for "DoubleBuffer" solution.
"XLaurent" a écrit :
hello all,
i have a problem when i make drawing.
i draw on a panel, in the OnPaint event. The drawing contains lot of lines, texts, arrows, ... Also, when i move the mouse over the panel, i draw a large cross under the mouse pointer to show to the user the position of mouse.
all work properly...but when i move the mouse, i have a bad screen effect...it seems that all drawing are "flashing"...
with 2 or 3 lines,no problems. But over 500 lines and more, this effect is very bad.
Have you this problem too ? if no can you give me an sample of drawing or ( better ) a solution for me ?
Eric Mittelette[MS\)
Good response from pyroa. In the case that you describe, I think dbl buffering is the good way...
My2Cents Eric
"Pyroa" <##> a écrit dans le message de news:
Hello !
Sorry for my poor english ... I'm french ;) Try to draw all your drawing into a bitmap and draw it on the panel.
You can also to add in the constructor of your panel this code :
But the last solution must be don"t work, the first solution is the better for me :)
bye !
"XLaurent" a écrit dans le message de news:
hello all,
i have a problem when i make drawing.
i draw on a panel, in the OnPaint event. The drawing contains lot of lines, texts, arrows, ... Also, when i move the mouse over the panel, i draw a large cross under the mouse pointer to show to the user the position of mouse.
all work properly...but when i move the mouse, i have a bad screen effect...it seems that all drawing are "flashing"...
with 2 or 3 lines,no problems. But over 500 lines and more, this effect is very bad.
Have you this problem too ? if no can you give me an sample of drawing or ( better ) a solution for me ?
Good response from pyroa.
In the case that you describe, I think dbl buffering is the good way...
My2Cents
Eric
"Pyroa" <#NOSPAM_Pyroa@wanadoo.fr_NOSPAM#> a écrit dans le message de news:
e3Dofyy0EHA.1452@TK2MSFTNGP11.phx.gbl...
Hello !
Sorry for my poor english ... I'm french ;)
Try to draw all your drawing into a bitmap
and draw it on the panel.
You can also to add in the constructor of your panel this code :
But the last solution must be don"t work, the first solution is the better
for me :)
bye !
"XLaurent" <x_laurent69@hotmail.com> a écrit dans le message de news:
a205aac.0411250944.6211f08@posting.google.com...
hello all,
i have a problem when i make drawing.
i draw on a panel, in the OnPaint event. The drawing contains lot of
lines, texts, arrows, ...
Also, when i move the mouse over the panel, i draw a large cross under
the mouse pointer to show to the user the position of mouse.
all work properly...but when i move the mouse, i have a bad screen
effect...it seems that all drawing are "flashing"...
with 2 or 3 lines,no problems. But over 500 lines and more, this
effect is very bad.
Have you this problem too ? if no can you give me an sample of drawing
or ( better ) a solution for me ?
But the last solution must be don"t work, the first solution is the better for me :)
bye !
"XLaurent" a écrit dans le message de news:
hello all,
i have a problem when i make drawing.
i draw on a panel, in the OnPaint event. The drawing contains lot of lines, texts, arrows, ... Also, when i move the mouse over the panel, i draw a large cross under the mouse pointer to show to the user the position of mouse.
all work properly...but when i move the mouse, i have a bad screen effect...it seems that all drawing are "flashing"...
with 2 or 3 lines,no problems. But over 500 lines and more, this effect is very bad.
Have you this problem too ? if no can you give me an sample of drawing or ( better ) a solution for me ?
