请教：在WMPaint事件中用begin Paint(Handle, wPS);为什么得到wPS.rcPaint都为空？(100分)

若

若醉

Unregistered / Unconfirmed

GUEST, unregistred user!

• 2001-09-24

• #1

简述如下：
TTest = class(TWinControl);

procedure TTest.WMPaint(var Msg: TWMPaint);
var
wPS: TPaintStruct;
cR: TRect;
begin
BeginPaint(self.Handle, wPS);
cR := wPS.rcPaint;
...
end;
为什么得到了cR总是为空

 

K

kccp

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GUEST, unregistred user!

• 2001-10-17

• #2

hehe

 

S

savetime

Unregistered / Unconfirmed

GUEST, unregistred user!

• 2001-10-18

• #3

是不是应该分析一下TWMPaint

 

W

wjiachun

Unregistered / Unconfirmed

GUEST, unregistred user!

• 2003-03-19

• #4

接受答案了.