DiskCanvas:TCanvas;
DiskCanvas:=TCanvas.create();
DiskCanvas.handle:=GetDc(0);
with DiskCanvas do
begin
//''''''''开始操作了
end;
ReleaseDc(DiskCanvas.handle);
DiskCanvas.Free;
var
DiskCanvas:TCanvas;
begin
DiskCanvas:=TCanvas.create();
DiskCanvas.handle:=GetDc(0);//桌面的handle是 0
with DiskCanvas do
begin
//''''''''开始操作了
TextOut(100,100,'hello world');
end;
ReleaseDc(DiskCanvas.handle);
DiskCanvas.Free;
end;