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GeneralRe: paint application question Pin
J. Dunlap30-Apr-03 8:31
J. Dunlap30-Apr-03 8:31 
GeneralRe: paint application question Pin
lfsong1-May-03 17:55
lfsong1-May-03 17:55 
GeneralRe: paint application question Pin
James T. Johnson1-May-03 18:06
James T. Johnson1-May-03 18:06 
GeneralRe: paint application question Pin
lfsong2-May-03 5:30
lfsong2-May-03 5:30 
GeneralRe: paint application question Pin
James T. Johnson2-May-03 14:57
James T. Johnson2-May-03 14:57 
GeneralRe: paint application question Pin
lfsong2-May-03 19:03
lfsong2-May-03 19:03 
GeneralRe: paint application question Pin
James T. Johnson2-May-03 23:00
James T. Johnson2-May-03 23:00 
GeneralRe: paint application question Pin
lfsong4-May-03 18:46
lfsong4-May-03 18:46 
Thanks for your replySmile | :) I have almost settle the flicker problem and understand it quite clearly.

Yesterday when I want to make several kinds of brushes for my paint applicaiton using GDI+, I am stopped again. It seems that GDI+ hasn't packaged the windows API all around, and it doesn't fit well with a strongly interactive paint program like the one I am making.

There are two problems:
1 - brush with aplpha blending
whenever the user draw a freeline, it actrually had been drawn with mass 'slight streight lines' within MouseMove EventHandler(these streight lines joins points that MouseMove event passed in). So if the Pen is assigned a Color with aplpha blending, after each mouseDown state, every 'slight streight line' will partly cover the last 'slight streight line' that had been drawed. So after MouseUp state, the whole 'free line' has a quite ugly look, while what I want is a free line with sigle alpha value so it will has a clear and correct look. Another line in another mousedown-mousemove-mouseup rountine could cover the last 'free line' to form a effect that the intersected part of two 'free line' would be darkened, that's all right.

2 - eraser
I want to realize a eraser tool, it could set pixels on the bitmap buffer to transparent. I don't know how to. It seems that GDI+ donnot have a XOR operation to use, can I call GDI's XOR op? Is there someway easier to do this task?

Becasue this forum doesn't support image. Hope I've given a clear explanation of my problem.
If you want to discuss it further with me.Maybe I will email you some images of my tests or even my code.
3x a lot
GeneralRe: paint application question Pin
J. Dunlap4-May-03 18:57
J. Dunlap4-May-03 18:57 
GeneralRe: paint application question Pin
lfsong4-May-03 22:52
lfsong4-May-03 22:52 
GeneralRe: paint application question Pin
James T. Johnson4-May-03 19:05
James T. Johnson4-May-03 19:05 
GeneralRe: paint application question Pin
J. Dunlap4-May-03 19:36
J. Dunlap4-May-03 19:36 
GeneralRe: paint application question Pin
James T. Johnson4-May-03 20:24
James T. Johnson4-May-03 20:24 
GeneralRe: paint application question Pin
J. Dunlap4-May-03 20:29
J. Dunlap4-May-03 20:29 
GeneralRe: paint application question Pin
lfsong4-May-03 23:36
lfsong4-May-03 23:36 
GeneralRe: paint application question Pin
James T. Johnson5-May-03 1:01
James T. Johnson5-May-03 1:01 
QuestionAm I running as a native image? Pin
solidstore29-Apr-03 1:20
solidstore29-Apr-03 1:20 
AnswerRe: Am I running as a native image? Pin
Stephane Rodriguez.29-Apr-03 2:18
Stephane Rodriguez.29-Apr-03 2:18 
GeneralLow level network application Pin
Andrei Matei28-Apr-03 22:29
Andrei Matei28-Apr-03 22:29 
GeneralRe: Low level network application Pin
Andy Davey29-Apr-03 16:16
Andy Davey29-Apr-03 16:16 
Generalcall to the main thread Pin
OmegaSupreme28-Apr-03 15:59
OmegaSupreme28-Apr-03 15:59 
GeneralRe: call to the main thread Pin
Andy Davey28-Apr-03 16:24
Andy Davey28-Apr-03 16:24 
GeneralRe: call to the main thread Pin
OmegaSupreme28-Apr-03 16:54
OmegaSupreme28-Apr-03 16:54 
GeneralRe: call to the main thread Pin
david.minor3-May-03 18:51
david.minor3-May-03 18:51 
GeneralRe: call to the main thread Pin
Andy Davey5-May-03 21:24
Andy Davey5-May-03 21:24 

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