The left mouse button pressed can be realized in OnLButtonDown alone,,,, but I wouldn't be together, and don't understand the grammar, hope to have a great god can solve! Really thank you very much!!!!!
CodePudding user response:
Click on the area or in OnLButtonDown, judgment,CodePudding user response:
I think in the left mouse button response information function to define a variable, to record the number of mouse the left key is pressed, then the numeric value corresponding to different design of variable, and then refresh the view area, I think it should be ok,,CodePudding user response:
You can write inside the OnPaint function handler then you press under the mouse movement in the first process by pressing the messages and refresh function called sendmessage the WM_PAINT to
CodePudding user response:
OnLButtonDown on setting a Flag mark, and then call InvalidateRect forced to refresh, ontouch function according to the different behavior of the value of the Flag to decide,