- 1 year ago
NSIS ListView - GetItemText returns wrong value
In NSIS, the ListView
control is widely used for displaying and interacting with lists of items. The GetItemText
function in NSIS is used to retrieve the text of a specific item in a ListView
. If you're encountering issues where GetItemText
returns the wrong value, there could be a few potential reasons for this behavior:
Incorrect Item Index: Ensure that you're providing the correct item index when calling the
GetItemText
function. The index should be zero-based.Subitems: If you're dealing with a multi-column
ListView
, make sure you're specifying both the item index and the subitem index correctly. The subitem index starts from 1.Unicode Issues: If your
ListView
contains Unicode characters or special characters, there could be encoding or character set issues affecting the result.
Here's a sample code snippet demonstrating the usage of GetItemText
for a single-column ListView
:
nsis# Create the ListView
nsDialogs::Create 1018
Pop $hwndListView
${NSD_CreateListView} 0 0 100% 100%
Pop $0
nsDialogs::Show
# Add items to the ListView
SendMessage $hwndListView ${LVM_INSERTITEM} 0 "Item 1"
SendMessage $hwndListView ${LVM_INSERTITEM} 0 "Item 2"
# Retrieve the text of the first item
SendMessage $hwndListView ${LVM_GETITEMTEXT} 0 0 $R0
MessageBox MB_OK "Text of Item 1: $R0"
# Clean up
nsDialogs::Destroy
If you're dealing with a multi-column ListView
, you need to specify the subitem index as well:
nsisSendMessage $hwndListView ${LVM_GETITEMTEXT} 0 1 $R0 ; Retrieve text from the second column
If you're still facing issues, consider debugging by displaying the item index, subitem index, and the value returned by GetItemText
in message boxes to understand what's going wrong:
nsisSendMessage $hwndListView ${LVM_GETITEMTEXT} 0 0 $R0
MessageBox MB_OK "Item 0 Text: $R0"
If the issue persists, please provide more context or code snippets so that I can assist you more effectively.